It will take about 300CFM to make 617FWHP all else being perfect,and that means an intake capable of flowing with the heads and a CAI all the way to the filter capable of flowing around 1300CFM to go along with that fancy AS&M monoblabe.More air in,more fuel can be put in,bigger pop=more HP.

Mindgame
I have had a good bit of luck with the TS gapless second,but very bad luck with there tool steel and stainless top,Couldn't get them to seat with the proper grit hone job.This will be my first venture with gapless top.Taking what I have learned from gapless second and applying to the cyl's for the top ring.I have heard good and bad about them so we will see.The theory is sound if they seat.The Probe pistons have some special adjustments to help them.