It sounds like a 380 hp crate magnum which have dynoed at 400 hp ,Which i would think twice about putting a blower on as it it most likely has hypereutetic pistons at best. Do your research on the heads to see they will support 400 hp plus the 200 the blower will add. I’m am taking a chance on my magnum with hypereutetics with a 150 shot of gas. There are others who will disagree with me just my two cents.