[Jim Downard]

I've got a 393W stroker, but I'm running KB 9:1 pistons and Roush 200 iron heads. Edelbrock performer RPM intake, Performer 700 cfm carb, and comp cams with .541/.544 lift at 286/294 total duration (dur @.050 is around 246 but don't quote me on that). Mostly stock bottom end, but running MDS ignition and distributor. She made a consistent 360 rwhp and 400 lb ft torque rather easily. I say go to a decent set of windsor heads and a cam mated to work with it and like the others have said, you'll seen an additional 75 hp. The AFR's would do you well, and there tech line will tell you what cam to run, but they run around $1400 where with the Roush 200 iron heads, you'll be looking at around $1000 assembled. There's my 2 cents worth. Good Luck.
Jim