The best working and fit is the 1966 to 1969 street hemi oil pan, been there done that swap on a bunch of 1963 to 1965 B body street drag and race only cars up
Those pans are about 1 to 2.0 inches deeper than the original air sucking swinging pick up long sump M.W. oil pans on the OEM M.W. motors.
I think a 3/8 NPT stock oil pickup for a 1965 to 1970 C body B-R/B motor will fit and work good up scope
If your block has been modded for the larger 1/2 NPT then use the stock street Hemi oil pick up up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)