personally if its a track/show car you only go to a few meets in on the road, then look into headwork a lot. like adam says 3 angle valve job is a good thing to have, gains a increase in power for sure, and suits track cars very well.. if its more a road car for shows and meets then a stock head will suffice, and you keep good torque as well.. over the winter I will be hopefully, making a full head for mine, with 3 angle valve job and some billet cams..