The 325hp version is listing for 35k and is non-supercharged. The 400hp version is going to list for around 45K and the 500hp version is going to list for around 60-65k. I took these prices direct from the Saleen website.
I was looking at the Vortec Superchargers website and noticed they had pictures from SEMA 2004. There are several images of 05 Mustang GT's with Vortec superchargers on them. Does anyone have any numbers or data on these superchargers?