The Time is Now......

[BYEBYE2U]

Using the H693cp pistons you will go up to about 10-1 comp. with 781s
215s will raise comp. to 11-1. More comp. equals more HP n lil more heat..
Higher compression creates higher piston speeds n of course vacuum
Don't put the 781s on your combo. : You'll drop 1 point of comp. n at that point you can run a turbo or supercharger
They do sell a electric vacuum pump that will help out your brakes n headlight actuators:
Our ZR1s have a pump like that...