Sacrilege, I don’t think so. I had a nos 78 Supercourse frame, that was never built up, yours actually looks better. I found the peeling decals and flakey paint unacceptable. So I had it redone, wasn’t a real fan of the gold paint anyway, but aside from the paint and wheels, stayed pretty true to the original. I did have the lugs accented with gold paint though. You got a great deal for 80 dollars!
Tim