I have a 12 bolt rearend from a 1976 truck and I was wondering if I could install that under my 1996 camaro

 

with alot of fab work anything is possible... but generally no, it wont work with out extensive work...

 

You would have to check the overall width of the assembly, to see if it fits. If not, it might need to be narrowed. You would have to determine if the truck rear has a limited slip diff, if the gears are the ratio you want, and whether it needs to be rebuilt. Then you would have to strip all the brackets off your 10-bolt rear, and weld them onto the 12-bolt without warping the axle tubes. Finally.... and this it the tricky part... you need to find a way to attach your car's torque arm to the 12-bolt.

I knew someone who did it, and he said he would never attempt to do it again, and would not recommend it to anyone.