W2 Heads for a 340 Block...

Hey everyone, I have been on the site for some time, but for the most part I have just bought odds and ends things to start my build on my 71 Demon, I recently picked up some W2 heads from a friend of a friend, and I was wondering kind of combos people run with them, I know they are a rare head and it's kind of rare to come across a set that remains stock, but I was told these are in really great shape. I had been looking at doing a 408 stroke from a 360 block, but the more and more I think about it I think I'd rather use a 340 block and stroke it to a 416. My question is what is required on the heads to use them, or can I even use them on a stroker motor? I am not an engine guy so I figured I'd put it out there. I am just trying to get an idea of some of the directions I can take when I begin. I am currently deployed to Iraq, but I am nearing the end of this tour so I plan on putting an engine together when I return home. I am from Kentucky, but living in the Houston area now, so if someone knows where I can find a deal or some help from that area I'd appreciate any input that I can get. I am looking to be around the 450 HP range from the motor, and it's going to be bolted up to a A833 OD 4speed, not sure what type of clutch I will be running, and the rearend is a 8 3/4 SG with 3.91 gears. Just to give you an idea of the drivetrain I will have, which I am sure would be able to maintain that amount of power no problem, so please fill this thread with as much knowledge as possible, I am a helicopter mechanic, but I am eager to learn more about working on engines, and body work, as I am going to encounter both in the very near future!

-Alex