2.5 V6 project on
Join Date: Apr 2008
If you account for labor and fabrication as well, 4k won't get you very far. 2lt TB has nothing to do with 3lt 24v, nothing is interchangeable, and you wouldn't want any of it even if it was.
In my opinion, a centrifugal supercharger (like the rotrex kit) is a complete and utter waste of money. I think the only reason they caught on with the alfisti is because Autodelta brought them up and for some reason everybody afterwards stuck with them. Their principle of operation is that the maximum pressure is achieved on the rev limiter, which is useless on a street car, where you spend most of the time on the midrange, an area a centrifugal supercharger makes very little boost, just enough to compensate for the losses it introduces and a tiny bit more. A turbocharged car with the same output as a car with a rotrex supercharger will be miles faster on a typical blast on the road.