Recommend Head Rebuilding

I wish I could say I was more familiar with that casting number-are they open chamber type smog heads? As with any stock head, it depends on what all you wish to accomplish. If you're running a stock bottom end 318, just a simple overhaul should suffice...good 3 angle valve job will help low and mid lift flow and improve the off idle torque and acceleration. If they are open smog heads, I'd almost say have them shaved a little to close up the chambers and yield a little higher compression.

Do you know what kind of cam you want to run?