Hmm, how to answer that? Well my plan had been to run the 177ci with better heads. Instead I found this already done with a 142ci and Edelbrock heads. For a few years it was everything I wanted it to be. But now I want more, and there just isnt much room to go up with these smaller blowers. If I were starting from scratch i'd go with a ProCharger. It's double the cost but will make much more power. I think the prices on these small ones have gotten out of hand. When I got mine Summit sold the 142 for 1100+. I'm on the fence as to wether they are worth the 2200+ price tag they carry now.
400(350 for now) 142 supercharger
3.73 posi 7.5