What Heads?!

Im not a big alcohol person but running it has some engine eating issues. plus i think you comp is to low to use it. What heads do you have on the combo now? If you piston domes are to tall for a lower cc head they may require fly cut even with that small lift cam. What is the cc and what is the part number on the pistons. Remember big/ high flow heads like big cams and big cubes. I would stay with gas and reserch what heads will work well with your cam if your not going to change it. 440ies have a thresh hold around 575/600HP where you will need to open your wallet big time to get all the parts to work right and hold together.