I thought I would have the axle replaced in my car by now but I ran into an unexpected problem with my Amazon order for a new axle. The axle was in stock when I placed the order but a short time latter I received an email from Amazon saying the axle was not in stock. They told me I would receive another email when they had an estimated time of delivery.
After a few days of no email updates from Amazon I decided to cancel the order and look for another axle. To my surprise I wasn't able to cancel the order on Amazon's website. I requested a call from Amazon customer service and they called me back almost immediately. They canceled the order promptly without problems and no charges to me. After talking with Jim Finn I found that the axle for '88 models is different from later years. He will be sending me a good used axle via FedEx at a good price soon.