That's true. One other mod I did was swapping out the rear calipers for 1996 Cadillac Eldorado. It was an easy swap but the next guy [I'm pretty sure there won't be] will have no other idea what I did, however I did indicate that in the owners manual. I also swapped out the steering wheel but that is a visual swap and changed nothing inside the column.
The 'vert also has a different steering wheel with wiring changes [air bag, and security] as well as a different GM radio/stereo but uses same Reatta connectors.