jtedd, how much boost are you looking to make, and how much power do you want to make? These are key factors, but I would check with DMPE inc. they have a website,
www.dmpeinc.com , and have done my supercharger for quite some time. they are probably one of the best companies around for roots style superchargers, and usually have used ones people have sent in on trade. You might have to get a six inch offset for the distributor though... Just my two cents!
Matt