parts that fit for a deal or not?
Reply #15 –
To identify GT-40P heads while installed, look to the lower right of the cyl. #1 spark plug..near a headbolt...it will have the letters "GTP" cast in head....casting numbers are F77E and also F76E I believe...but that will be on the bottom side of the heads near the pushrod holes. I believe they came on '96 or '97 up explorers with the 5.0. You WILL need "P" specific headers...FRPP makes some but they can be pricey...Mac Full-Length headers work well too.