Get a Electric EBay Supercharger and bolt it to the one you have now. That is like 4 more psi and about 9,435 more horsepower for sure...I dyno'ed it last night in my living room and it was so hard to tune for but I just added like 6 more 10amp fuses and I was good to go.

Kick? Like everyone else says. Throw a smaller pulley on and you'll get more kick. Just to let you know the piston might kick back at you.