How much would be left on the table?

I have never had an engine on a dyno, how much does it generally cost? I know of a few places within an hour drive that has one, maybe I will have to call around. I thought about using the small headers for now only because I will pull the engine next spring to paint the engine compartment, and I may be able to save up some by then. The Hooker 5204s are 1 3/4, I think, and sometimes I see them for sale fairly cheap. Heck, I wouldnt even be afraid of cutting the inner fenders for fenderwells, I have already replace the upper portion of both of them, and a small peice under the master cylinder on the shock tower, so it isn't like I need to worry about keeping them mint.