I was looking at some used superchargers. I was wondering if there was a difference between a head unit for a carb supercharger and a EFI? I know the inlet pipes is different. But is there anything else? Don't laugh as I am new to forced induction and am looking for a supercharger to install on my TPI. I know a guy with a paxton TPI supercharger for sale. I am looking at others I might be able to buy and then just get the pipes made. I know the Paxton Sn93 is not the best and why I am asking for help. Thanks guys