Twin turbo S4s are very nice, and very well built. I considered getting an 00-03 S4 but after researching them on the S4 forum I realized that they have many of the same issues TTZ32s have; no room to work and no heat dissipation all lead to complicated b.s., etc. Their setup is very similar to the vg30dett. I would have bought your 96 slicktop for way more than what you got traded in; it would have made a great garage project car. If you thought the Z32na was tough to work on, you're in for it w/ this S4. Good luck and congrats on your new car.