It is basically a prototype kit that a shop (now closed) used. Eaton roots blower from a Ford SuperChicken.

 

i was thinking myself of getting the speedforceracing kit. was wondering though how it performs, i sent tim an email asking if i needed anything else for my 84 n/a to make it runs well and he told me just a good clutch.

 

I too would like a supercharger, but don't want to loose my A/C to do it.
I would have liked the one Derek was building but he has gone out of business. I am thinking of building one myself and then buying a fuel controller.

 

I'm pretty sure Turbo Performance Center in Jessup, MD makes and sells superchargers for all Porsches. Their phone number is (410) 799-7223. I know they have a lot of experience building race cars and they even sponsor some race car driver that I've actually heard of but can't remember his name.

 

all your fuel contoling needs http://www.splitsec.com/