Lean burn or not ? And Desmog a T-Quad ??

I’m not fully understanding except, yea, I was a new guy once too and it was hard for a spell. Please restate the, question? The difference in what now?
Sorry wrote it wrong , fixed it..i was asking whats really the difference for this 78 400 c.i tquad and a 1972 tquad....i just wanted to be sure that it could go on a mild 360 without any major issues.