Small bolt pattern wheels on a 70 340 Dart?

I’m not sure that the center bores were all the same diameter for the 9”, pre ‘72 10”, 73+ 10” drums and KH disks either.

Not an SBP wheel expert by any means but I seem to recall there being more than one SBP wheel center bore diameter. Could be wrong, maybe someone with more SBP knowledge can correct me.
i *should* know this... seeing as i have two small bolt 9" setups on cars sitting over here and 10" stuff kicking around.

i want to say that all SBP registers are the same no matter, but i can't with 100% conviction because i can't remember what all i swapped around between the cars and what was in my inventory.

knowing ma mopar... it's different. *laughs*