Hello, Last night the alternator siezed on my fj40. I am planning to get a mean green one, but am unsure what year my engine actually is. The truck is a '78 but the engine was put in by the PO from NAPA. All I know is that it's a 2F from a later model. The engine tag says "2F 536374" I looked at the specter site but it doesn't go past '78 and there was nothing close. Anyone know what year this is? thanks!