429 rebuild

Help!!!!!I just bought a ac cobra kit car. It came with a 429 engine (dive-A2A) block that has been recently been magnafluxed, bored to .030. It came with New forged federal mogal pistons (L2366F),rings, a 429 crank and a set of bare aluminum heads. He told me that they are trickflows. (I dont believe they are,not sure what they are or the cc's. They have double A's in a circle and a number A1352 stamped on them and also 104227.
I'am looking first to figure out if anyone knows anything about these heads or who manufactured them. Should I use a 429 crank that came or get a 460 crank, and what is the best (Most economical) way to rebuild this engine to 5-600 hp? Thank you Jay