273 R. side manifold numbers

I just checked 2 65 273 mans. the L sides show 2465847, mine show same no. as your on the right side. one set just came off 65 dart that was last driven in 1980 so I dare say its never been apart!??

i'm NO expert on 273 but perhaps the b body used different left side maniforl????

the second set I have is off car that I bought in boxes!!!!! so no telling there!!!

we all know mopars are strange to say the least!!!???? does your left side NECK down?????? I would say IF the 273 left side for the B body didn't neck down AND fit the early A cars, people would been using them for decades!!???? perhaps both necked down, but the exit angle was slightly different? but would work on the A car as well???? dunno

maybe Ma Mopar changed their castings along then and used different cast NO. ?????? wow I just don't know, but interesting question....