Comp has a line of NPI cams, look at thier 'X-treme Energy' line. theres 6 cams for 2v's. if you look at the lift, the .500 and less are for NPI gt's. .550 lift cams are for the PI's.
and most PI cams will work in a NPI car as long as they are installed right.
if you use pi cams just PLEASE be careful with piston to valve clearance, with an npi block the deck height is shorter then a pi block (but good for higher compression.)
I had the Comp 274H cams in my NPI headed motor. They are the most aggressive off the shelf cams with .500 lift. Rought old school idle. Gear and higher stall recommended. Also if you do something like that look into doing the valve springs as well. I actually took mine out and now selling them. Got one guy interested but hasn't paid yet so if your interested shoot me a PM.
follow the link and pm me if you want em. I can sell you springs on the cheap too. It would not work with my pi swap but they are perfect for a non pi setup.