I just picked up an '88 non-turbo quattro. Having driven an 87 turbo and the 88 there is definately a difference in power...However as I like to putz around under the hood once in a while so I opted for the non as there is more room under the hood. And with the close ratio 5 speed it still gives me the illusion of go-fast, especially if i red line it once in a while.