Yes I'm sure it can be done but if it is your first rodeo it might take a few tries before you find the correct combo. My pump gas low deck 470 makes around 700 hp with out of the box Trick Flow 240 heads. I'm running a roller cam so you'll give up some power with a flat tappet but not a huge amount. A ported intake manifold is a good way to pick up some power. EFI would solve a bunch of issues and help make the engine really reliable. So yeah, I'd say it could be done but probably best to team up with someone who has done it before so you aren't doing all the R&D yourself.