i had a lifter pop out of place so i had to take the intake manifold off. turns out it is impossible to find the gasket for the intake manifold. i have ordered several only to find it doesnt fit. i have a 87 omc ford 460 with all stock parts. every gasket i get doesn fit. i dont knwo what to do. someone help. i was told that there was a performance 460 and a regular one however i keep ordering form different people that swear they have it right and sure enough im about to be stuck yet another weekend with no boating for a damn gasket!!!!