The turbo block has a machined boss on its side for the oild drain from the turbo. Otherwise, it's the same block. I think the heads were different, the camshafts definitely were. If he can find a TC, he can get all of the parts needed to perform the swap. I'm tempted to do this on my Mustang, but it's a '91, and I''m not sure if an '88 engine and computer will pass the '91 emissions test.