The first gen, Fire Power Chrysler, Hemi motor oil pumps mount on the number five main caps like the LA SB motors due
Correct. The Gen1 HEMI's lower end is basically a Small Block.
it be vice a versa
The early Mopar Firepower hemi motos in the Chrysler cars had similar poly motors with less HP and torque used in the cheaper Windsor and Saratoga cars, I think the blocks are the same for both type motors,
I'm not sure when Mopar started making the Poly headed motors and which brand they used them in first either
Dodge and De Soto both had their own Hemi motors from 1952 on is what I've been told, I don't know if they had poly head V8 also
Plymouth supposedly didn't get V8 motors until 1956 is what I've read on here, I'm not sure if that is accurate or not
