A-Bodies were "S" block builds. (Machined off Left side rear engine mount ear and drilled bosses at the oil pump for left side mount, chrome covers and oil breather.) Hemi Orange
RR and SB were "H" block builds (Normal Engine Mount ears no drilled boss at the oil pump.) Hemi Orange
Me thinks your confusing the M code 1969 A body 440 mounts with the H code 383 A body cars, the 440 had the oil pump bosses drilled and tapped, the 383 did not
The A body 383 blocks from 1967 to 1969 had two bosses cast into the driver side block that where drilled and tapped for the block steel motor mount to bolt to, no cast in motor mounts ears machine off either
I've had two 383 A body cars that where original and seen several original M code 1969 440 A body cars, there are differences in them on the block machining and exhaust manifolds