Part of your problem is Isuzu never produced a supercharger. They had a turbo version of the Impulse in the late 80's and a turbo diesel in the Trooper around the same time, but that was it.

Barak's supercharger is an aftermarket roots (I think) style unit designed for the 2.8/3.1/3.4 GM platform, I believe.

That is why you've had a hard time finding an Isuzu supercharger. They don't exist. <img src="/forums/images/graemlins/smile.gif" alt="" />

Michael