Running about 7psi of boost with my supercharger I did around 14.5 in the quarter mile which I calculated to about 180-190hp at the wheels. I guess around 200 at the flywheel. So it is possible, but the downside is I am rebuilding the engine. I would blame it, for the most part, on poor tuning.
You do need a reprogrammed ECM, but that is the easy part and there are some on the forum who can help you with that. Takes 5 minutes to install.
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87 Fiero GT (Rotrex Supercharger)
Rebuilding Engine! Check Website under FIERO RESURRECTION!
WWW.angelfire.com/pa5/davidfiero/