x heads on a 360??

Is this feasable?? I have a 360 short block all ready to go except for heads. I just picked up a Formula S 340 Barracuda that the motor is set up in. Don't know if the block is any good. Would these work on the 360 without modifications. I know they will bolt on but the 340 and 360 have some differences. The 340's chamber is different because the sit out of the hole, right?? Just wondering if compression would be different. I know the heads will have to be checked and probably new guides and hardened seats also besides the usual valve job. Might be cost effective to just bite the bullet and get a set of Eddy's or RHS and sell the X's, I don't know .Any input would be appreciated.