I'm in the process of having my motor fully built. Everything for my block is already ordered and being rebuilt. But I can't make up my mind what I want to do with my head. I want it ported, polished and rebuilt. But I can't make up my mind if I want to go with oversize valves. I was quoted a price of $1250 for a fully rebuilt head with porting, polishing, multiangle valve job, bowl work, flow tested and a few other things. My question is how much added expense is using oversized valves, and is it worth it? What kind of prices have you all paid-if you don't mind me asking? Thanks..