If I had the money, I would but right now, I am just trying to get this back on the road for minimal cost. I looked for non-P GT40 heads but couldn't find any for a decent price. If I ever find some, I will snag them in a second and put all my hardware on them. They are a major hassle but if I put it all together and it runs well, I won't have to mess with the plugs/headers for a couple years, hopefully.