Felpro 1008's

Im smiling over here, enjoying my beer in the rain.lol
Some still do drill a small hole for added cooling to the 2 center chambers but its kinda moot unless youre doing it on a slant and you always wanna keep that hole smaller than the rear passages as to not detour too much flow, the factory 3/4 exhaust seats go quick and this helps stetch them out a lil longer when running w/o hard seats.