318 heads on a 360

Me personally? If it was already together and ready to run and that's the only thing stopping my from driving my car I'd drive it! Is it gonna be the best combo? No! Will it get you from point a to point b and back to a? Yes. If you absolutely are at a standstill and cant wait the drive it and upgrade the heads when you find them.
im currently driving the car with a little wild 318 in it.. im just trying to get this motor built because the 318 is tired..