I bought a 1998 camaro disk brake rear end that was installed in a 3rd gen. Seller claimed that it had a posi, but when I bought it a knew something was up as it didn't lock both wheels when spinning the pinion. Since it was so cheap though I didn't care. Paid $75 for the rear end. After buying it, I was happy to realize that it had a 3.42 gear ratio which would be perfect for the t5.