E58 early casting

Looking for a 74 cast 360 engine for my 74 360 duster Vin VS29L4Bxxxxxx (E58 360-4bbl HP)
Rebuildable short or long block must have proper year cast. Heads should have L's cast in them. My car will never be #'s matching but at least it'll be correct (wrong engine when I bought it) Any info also appreciated :notworth:
thanks hopefully within a 1/2 a days drive from the Okanagan.
Author: DodgeDan