- Feb 22, 2010
I just blew a head gasket on my car and have a friend that has a set of gt40-p's and gt40-x's that i can get from him. My question is which are better and why? I do have a turbo setup and the headers on the car now are not forgiving, and i had to notch the exhaust pipe coming from the turbo down so i could get the plug wire on the sparkplug. I think that the P heads move the sparkplug to a different location, to fire in the middle of the piston. Thanks for all of the help.