Need help with accessory hole probs

[sir_talk_alot]

so im looking at beefing my 350 up abit. its got average heads on it. i have a/c and the alt bolted to my heads. im looking for some double humps now to bump some power, but most of them dont have accessory holes and id like to have my a/c system on my truck. any suggestions? and who all has had experience with the smallest of the thumpr cam from comp? im looking for double humps, new springs, thumpr cam, i have an aluminum intake, and prob a 650-750 carb, whats the hp roughly? and anyone with the small thumper and 58cc 305 ho heads? thanks, mike