whats a supercharger like on a petrol 80s

[93Chewbacca]

Yes, the most boost you will see is 6psi with the stock pulley. Some people on Mud have experimented with smaller pulleys and got some more boost out of it.

However, a smaller pulley equals more heat from the delta change from the compression of more air. I would think you would need some sort of intercooler before getting to carried away with changing pulley sizes to minimize any ill effects.

Sounds like we need a larger supercharger running at lower RPM's. That would be my choice (if available). I would love to see a 14-71 bolted onto the I6, that would be excellent.