E-street vs Promaxx vs 440 Source

mopartsracing - Sidewinder Cylinder Heads For Big Block Mopar

I had a wonderful experience with Todd Marsh. $895.00 he also offers porting by retired Nascar porter. Tell him what cam you want to use and he gives you a discount on Isky springs. Comp's 275/285hl will get you where you want to be or 282s sft. Heads will be ready to bolt on.
Hey, thanks for the link! I'll be checking into these as well. Seems to be the offshore casting that they all get, and it's all in the quality of the valves, springs, valve job.