Why turbo?
Ive just finished supercharging a 4k with a SC12...goes well enough for the style of engine.
yes it will blow up as we are running 10psi boost on a 240,000+ standard engine and the guy i did it from revs the crap outof it...but it does work and it was easy
No modifications to exhaust manifolds etc,easy to make mounting brackets, and you dont have to use injection, they will work with draw through or blow through carb setups.
8 PSI at 1500 and 10 at 3000rpm to 5500, rev limited.
the pully is now diffrent to that pictured, its a twin belt pully and bigger now from a AIR CON.