[347 Stroker]

Ok, I've been asking alot of questions and have been getting lots of great help, thanks to all! Well, here's another question. As some of you might know already, from my other questions, I'm building a 302 into either a 331 or 347 stroker, or might even build a beefy 302 and stay on the 'not so exotic' road since this is my first engine to build and will go into a '67 or '68 fastback. Well, my question is this: A friend has offered to sell me 351 Windsor heads for $40. They're bare, have been hot tanked, magna fluxed, and resurfaced. They look like new. He ended up using trick flow since his motor's pretty well built (it's in a '65 GT 350 Clone that's beautiful). So, I'm thinking with some port work and factory sized valves and good springs, they should be great for what I want to do, ie not a drag car, just a classic cruiser. Will they bolt right up? The heads are older, and my block is from a '91. I think they're completely interchangable back and forth. Let me know what you think, or offer any suggestions. I'm also on a budget. Thanks for your help!