like charles said, anyone wanting to make REAL power, wont buy one. If you are in a bind, an want to get the car running, they are great for that.

just rmember, that they MAY NOT LAST. if you are comfortable with that, then buy it.

we have done a few SSAC/XS power kits, with no problems form the turbos. but the manifolds break left an right on the HONDA cars.

now the SUpras, we have used 3 xs power manifolds with NO PROBLEMS at all. Ozzie, GGPIS3, Casey have all used them on their 2JZs an we havent had a single isssue