Hah! Someone needs to get their story straight! I don't know much about auto manufacturing, but if 70-71 is correct, then I guess it's possible that my 72 was an early-year build and they were still using up the old ones. Or the ones in my car aren't original and were swapped at some point. At any rate, I know the 2951123 ends exactly where the rest of the exhaust begins (and it clears my PS) so that's the one I'm going to replace it with.