hey, i am in the middle of a turbo sbc build, am going with a 4150 750 double pumper on a 360 chevy with a single t70 turbo, i have a very good msd HEI ditributor with a cdi and btm, my question is i want to keep my distributor but it has vacuum advance on it, can i still hook to my carb ( even though its seeing boost) or can i just not use it, what do you reccomm. also it is not a forged out motor, scat pistons crank. rods, only going to see 7 to 9 psi, what would be a good total advance in timing that I should start with, whats the min total and max total advance, thank you for all your help, almost done, last couple of things left, thanks for the patience