One for one swap - a 302 block is the same, no matter what year it was made. The mounting holes for everything will be in the right places. The electronics are a different story. You will need a 89 engine wiring harness, TFI module & distributor. The intake manifold will need the crook elblow removed to clear the hood. You will need a 86-93 EGR spacer to mate the TB to the manifold. There are some other small differences, but I can't remember them at this time.