Here's just a shot in the dark.... Did your car still have the hood and six barrel setup when you got it?
Not when I got it but that's one of my long stories. When it was in Youngstown the car was a complete A12 Road Runner complete with original Lift-Off-Hood, original intake, carbs, etc., It still to this day has the original 4.10 A12 specific Dana, Fender tag (unpainted and un-creased/bent corner:tickled_pink
and radiator support, trunk stamping, shimed LCA's. As you can see from the 1971 title the "M" is in place so for sure it's an A12 and was when it showed up in Youngstown. I spoke with Bob Frederick Jr. the owner('s son) now owner of looooong time Frederick Dodge in Boardman, Ohio just south of Youngstown and he knew the car back in the day and it had a bad@ss street racing history by the Acme Motors buyer starting in March of '71. Spoke with a friend of the Youngstown street racer Edward Agee years back and he along with Bob Fredrick and GaryT (aka gtsuperbee, that bought the car before I did btw) and all of them confirmed the story that GaryT told me about what happened to the original hood and original engine. The hood was run over by a Chevelle that lost to the A12 in a street race when the A12 owner forgot to re-pin it. That was the first thing that Bob Frederick told me when I talked to him and without asking about it. The loss of the original hood was the final death of the original engine eventually as it was run without an air filter and steel hood. GaryT bought it, sold or did a trade deal with Scott-S (aka r4sox) and I ended up with it in the mid-90's from Scott. I got in contact with GaryT back then and Galen Govier and they all confirmed the odd GTX trim to at least '71 and the rear mounted antenna and its original factory components. When I got it from ScottS he had already located an original intake and date correct original set of carbs, a Year One A12 hood. I later found an original A12 hood from a drummer for a rock band (Queens of the Stone Age) in California, went out there and hung out for a day and then had it shipped back to Ohio from California by a friend/driver for our race team semi. Found a 054 radiator back in the '90's, a complete long block 440 HP engine that was an over the counter purchase back in '69, a '69 727 from a Super Bee from flypaper (moparts) back then too. Have what I think to be 99.9% of everything to finish it but time and motivation. Got sidetracked with a couple of Road Runners ('68 and '69's), a '69 4-speed GTX and then found by odd happenings the car I originally wanted to buy back in 1969, a '69 Dart GTS 440 M-Code in the colors I was trying to order it in back then.
Oh and there you have my looooooog answer to your short question of " Did your car still have the hood and six barrel setup when you got it?" I've had friends tell people "don't ever ask Mike what time it is, he'll end up telling you how a watch in made" :shame:
MikeR