I'm not sure if I should really get into this discussion, but I am interested in the supercharger route. I am currently building a centrifugal supercharger package for my 69' Coronet and may possibly do the same with my Crossfire. Anyhow from the research I've done, I think that kwiktsi is correct about the install. I don't think that it could cost any more than 4k to do it especially if you have access to a workshop to build brackets, pulleys etc.

I hope I can find the extra cash to do it some time - most likely next year though.

Have fun guys!