Hi. I was just wondering if I could swap my rear axle out of my 88 GTA to my 93 Trans Am? I know the rear disc brakes are different, but can I bolt on my rear backing plates and disc brake system to the GTA axle. I just think the the rear in this car is to weak and would rather upgrade it to my old GTA rear I have in my garage. Let me know what you guys/gals think....Thanks, Charlie

 

Direct bolt-in yes, but chances are that your GTA has a 9-bolt rear end. If it is the original rear end? Then it does.

While the 10-bolt brakes can be adapted to a 9-bolt rear, they are not a 100% direct bolt-on & will require some mods to be done.

 

And the 4th gen rear is 4" wider, 2" per side, so you would have to use the 3rd gen wheels, unless you get aftermarket wheels in a 3rd gen fitment.