Post Bull Dog

Wheen I was a "kid" in 1949 I was a mechanic's helper (no technicians then) and worked on a Mack truck fleet of straight trucks and tractors with the L-head straight 6 EN354 (I still remember the model number), some smaller trucks had a smaller engine. Although I don't recall the vehicle model when looking a some pictures the EH looks to be the one most likely. Were there any other similar models built after WWII and about 1948?