All the OEM stock Mopar distributors I've work on have the amount of mechanical degrees stamp on the bottom of the rotor advance stub, you have to disassemble the distributors to read it. They are stamp with 11,12,13, and so on which is the amount of distributor advance, not crankshaft advance Which means 11 distributor degrees is 22 crankshaft degrees due to the distributor rotating at half of the crankshaft speed Ma Mopar liked a lot of mechanical advance, which make the motor have less initial or idle timing which is not good for what we hot rodders normally like
It is all fixable though
Shorten up the mechanical advance and use more initial, idle, advance
All the BB and most 426 hemi motors I know of seem to like between 34 and 36 degrees total, depending on which fuel and altitude