Background about this upgrade:
Originally called the "Aurora brake upgrade", this gives you a clue as to what components to get. The calipers and rotors need to come from mid to late 90's big GM cars. A quick search on the Advance Auto Parts or similar sites will give you the list.

Be sure to get loaded calipers if you are getting new, which should come with the brackets. If sourcing from a bone yard, tell them you need the unit complete with brackets. Used calipers will need NEW caliper bolts. I chose to get powder coated calipers and drilled and slotted rotors from Discbrakes.com.

IMPORTANT NOTES:
*This upgrade  requires the use of 16" wheels once completed!!
*The bolts for the new calipers are metric and may be hard to find.
*In some instances, longer brake hoses may be needed.
*Read all instructions before you begin the job.
* Click here and carefully read and agree to the DISCLAIMER

Instructions for the upgrade:

1. Jack up the front of the car and secure with jack stands
    
2. Remove one wheel. Do one side at a time.
    
3. Unbolt the brake line, and secure it as high as possible to prevent losing too much brake fluid.

   Put a plastic bag over the end and secure with a rubber band. A few wraps with the rubber band and it will not drip

4. Remove the caliper bracket bolts from the rear of the caliper.
    
5. Slide the caliper off of the rotor.
    
6. Remove the rotor (This may require some effort, lube, and tapping)
    
7. Check to see if the brake hoses will be long enough or need to be replaced with custom hoses. If stock hoses are too short you can abort the upgrade at this point if needed and return to the stock brakes.
    
8. The holes in the steering knuckle that the caliper bracket bolts went through now need to be enlarged. A 9/16" bit will do the job.

   If you are using a high torque drill, when the bit reaches the back of the hole, it will grab, almost breaking your wrist.

9. Slide the new rotor over the hub.
    
10. Slide the new caliper onto the rotor.
     
11. Using the new bolts, bolt the caliper onto the knuckle.
     
12. Using NEW crush washers, re-attach the brake line. Mine was a tight fit.
     
13. Now you need an assistant to help bleed the brake line. Instructions can be found here.
     
14. Replace the 16" wheel, properly torquing the bolts.

Do the other side.

Carefully at first, take a test ride. There is a proper way to break in new pads, but I'll leave that to someone else, or you might be able to find where it was discussed here before. I am very pleased with this upgrade. Braking is almost effortless.

BTW, yes, I know this post is worthless without pics, but I am nowhere near my car. I miss it. If I have forgotten something, or mis-spoken, I'm sure it will be pointed out, and I will edit my humble effort.
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Questions and answers about this upgrade:

Re: Front Brake Upgrade,
Barney Eaton
Long Time Member

I too have been trying to make some sense of all that has been posted on the forum. So I am going to make list what I THINK is correct, then maybe we will get corrections and then a good list.........

For the basic upgrade, rotors and calipers from the following GM front wheel cars from 1997-2004 Aurora Intrique Bonneville Seville Deville Eldorado Park Ave Lesabre Riviera Impala Monte Carlo I suspect the Grand Prix is also the same. Using the standard parts (not the Camaro caliper)here are the questions.........
(1) does the Reatta brake hose work?
(2) Does the caliper mounting bracket from the donor car work on the Reatta?
(3) Does something need to be drilled?
(4) Can you use the Reatta caliper mounting bolts? Now, If you want to use the Camaro dual piston caliper.
(A) Does the Reatta brake hose work? I think the answer is NO
(B) Does the Camaro caliper mounting bracket work on the Reatta?
(C) Does something need to be drilled? I think the answer is NO ...IF the answer to (B) is YES
(D) I believe you use the Camaro caliper mounting bolts IF the answer to (B) is YES

Now, lets see if we get any straight answers.
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Re: Front Brake Upgrade, Really [Re: Barney Eaton]
MauiWowee
Member

Here's what I know..........
Using the standard parts (not the Camaro caliper)here are the questions.........

(1) does the Reatta brake hose work? Yes, however it is a tight stretch and I am not very comfortable with it. I may try to find some slack further up the hose, but will probably have some slightly longer stainless hoses made.

(2) Does the caliper mounting bracket from the donor car work on the Reatta? Yes, the mounting bracket for the new calipers is a must.

(3) Does something need to be drilled? For the new caliper bracket to work, the two mounting holes at the knuckle must be drilled. There is a metric measurement for this, but 9/16" is close enough.

(4) Can you use the Reatta caliper mounting bolts? No, the new bolts are larger in diameter. I must point out to avoid confusion that the caliper to bracket bolts are also larger, and must be replaced, not reused. They are the long pointed ones. The others are only 1"-1 1/4" and a special thread. See first post.

I cannot help with the other questions.