Is this a 78 or 72?

[GLJ]

It doesn't match. See attached, it was a rusted forgotten hard-tailed bobber in the corner of a garage. ( I'm going to start from scratch) I bought it because the frame vin matched the title, and the engine turned over. Once i cleaned the carbs it fired on the 2nd kick. Didn't bother to look at the engine number till I tore it down.

Be interesting to see when you tear it down what the rods are and what cam is in it.