aluminum heads

I say use them.I think they have been selling them for close to 10 years now. I plan on using the 440 Source heads on a low compression 1977 440 block with stock pistons.The smaller chamber will give a bit more compression than the stock 452 head that was on the engine.Gonna be a pump gas street cruiser with highway gears 63 Belvedere. For my plans I think they will work great.