I own a 68 Mustang Coupe 302 J code, (not a GT), with a tree growing thru it. I was told the motor is original but I wanted to be sure. I did some research and now I'm not sure. Here's what I have for vins and codes 68 Mustang Coupe J Code VIN 8F01J120xxx (last three numbers replaced with xxx) Engine Block: Casting# C8OE - 6015 - A (told it was for a Fairlane?) This code is right next to it: 8K31 (I'm told it may mean cast on Oct 31st, 1968) Serial number on block 9R129640 (behind the intake manifold by the top if the bell housing) Intake Manifold: Casting # C8ZE 9425-A Code next to it: 7L27 I'm thinking that the motor was swapped and they re-used the intake manifold, but I've also heard of some strange actions that Ford took and by no means am I qualified to figure it out. The car is beyond repair, but I was thinking it would be a good donor for a Dynacorn 67 Mustang re-creation. If the motor is in fact a J code, I'd use it in the new body, if not.....I will go with newer running gear............. 5.0 Fuel Injection. thanks for your help.