The N/A motor with turbos we did a couple of years back and found out just like Z1 that it is just as cheap to do the TT swap. Almost all the N/A guys I talk to about doing a conversion or a TT setup on their stock motor whine about the price. The supercharger has been done also and requires the removal of the Air Conditioner. Here comes the whining again...."I don't want to loose my A/C". Plus by the time you are done with the cost of the supercharger, piping, etc.. you are still in the range of the TT conversion. So honestly if you *really* want the power of a TT then either
1. Loose your A/C for a supercharger 2. Add N2O 3. Pay the money for the TT conversion 4. Trade your car for a TT
The problem with 1 and 2 is any TT you run up aginst who is stage 3 or higher(which is probably 90%+) will still stomp you. I am not bashing on the N/A but I am being realistic.