had mine done a few years ago by nelson brothers in largo (not sure if they moved away or not). jefferson-irwin racing did my last set but i never ran them and bought the dart pro-1s instead. HPS cylinder heads in tarpon springs is still around. they did a friends car.

if you have a steady hand you could buy a die grinder and some bits (cone and ball) and do it yourself. practice on a set you do not mind ruining though and so it in an area you wont ming getting metal all over the place. the 1 paid i did looked awesome and turned out to be cracked when i took them in to be milled.

not much else around that i know of.