So for an F.I. motor the supercharger kit is $3500-$4000? What type of power does it make? Honestly, for that money I would do an engine swap and I can't see anyone spending 4K on an engine with 85hp. If you had a 50% power increase you would still only have 130hp. Don't get me wrong, I would love to see it done but it wouldn't be for me.