I'm running an older set of 1 7/8" Hooker headers. I hunted long & hard to find a set to replace my existing headers which were also 1 7/8" of unknown brand. I'm running a 416 with a solid roller .690-.660, Edelbrock heads w mild porting, 750 DP/4 point idle circuit & going through the traps at 6400-6600 with a 2500 lb car on 29.5 x 10.5 slicks,
