Mill decisions

Mopars are new to me. I lay'd down 530 rwhp on a little 306 Ford with a smallish 200 hit in the sauce. The cam was in the .570 lift range and duration at .050 was around .242 or so. It's been a few years for me. I was thinking something similar for a cam for this, a stall speed around 3600, tighter around 2800 if I spray it a lot (300+).

Your saying with my work'd X Heads I should be able to get that out of this or just get some W2's and start porting?

Also, since I'm not up to speed with my Mopars yet, what is the best stroker for a stock block? I know the 408 Ford's are about the best bang for the buck in a Windsor build, and the 331 is a lot nicer for the street than a 347 in a 302 block for various reasons. Would I be better off using my '68 340 block or going out and getting a 360 block?