Sidewinder heads from Marsh performance. Made in NC, not a lot of people are running them but those that do seem to have good reviews, essentially the same as edlebrock rpms but each head is custom built to your engine specs and come with valves and valve springs from Isky to match the cam you run. They do a cns gasket match job and all the above for 1175 shipped. Each head is personally inspected by the owner, who used to be the head specialist for Penske Dodge racing program before dodge left nascar a few year back.