X heads: To Port or not to Port!

If you're going to port them yourself, sure- just don't go crazy. If you're going to have them done by someone else, you may be ahead of the game to check out some aluminum heads (esp. Speedmaster)- out of the box they flow better, weigh less, etc. Prices have come down to the point where they might be more cost-efficient than paying someone else to port the Xs. You could always sell the Xs to recoup some of your money, too. People still look for them. Your call.