Slant 6 bell housing

I bought to bell housings. Both fellas seem nice and say they were from a slant 6 a body car . Both are totally different from each other . From every bolt hole , to starter to the arm position and angle. What are these ?
Blue one is supposed to be from a duster with slant 6 on a 230 trans which I also bought .

the other bell says it’s from a 72 dart and from same trans

But just can’t be . one of these or both are wrong . The holes just don’t line up with Each-other in the slightest so if one is for a slant the other can’t be

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