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I know GT40P heads have smaller exhaust runners and the spark plugs are at a different angle which mean you need special headers. But, I know the Ford Explorer at one time used actual GT40 heads before they switched to the common GT40P heads. At what year did this switch take place? Then, what...

I have a few problems, some of which have been recently mentioned in the CCRM thread. The purple car has been hit or miss on starting. Sometimes, once started, it will die while driving. Sometimes, it will even turn back on while coasting. I've been having fuel pump codes. I put in a 255 lph...