GM 270 ci Engines

[David_Hayward (RIP)]

CHEVROLET STAGHOUND ARMORED CARS
FLINT, MICHIGAN # 2 PLANT ASSEMBLED T17E1/ E2 SERIES

“ARMORED CAR, MEDIUM, 4 x 4, CHEVROLET, M6 (T17E1,etc)”,
approximately 3,800 produced 1942-1944

Engine #s: # ACR 1001 and # ACL 1001 and up [for "Armoured Car"? and “Right” and Left” respectively]
[presumably to # ACR4802 and # LCR4802]
Transmission #s “1” for 1942, “2” for 1943, “3” for 1944 – AC- 1 and up

I assumed that the engines were handed because of linkages, manifolds, etc. and not because they had opposite-rotating cranks. However did they counter-rotate into an common transmission coupling?