So here's some more info...
Block castings look like this(below exhaust man.)
A
CWG could be CWC
GMC1 2324004 (L215 on a small plate)
According to Inliners, this would be civilian eng with side mounts 56 to 62. Mine has front mounts, which would be 21939890 52 to 54 civilian. They show military as 2194202. I believe inliners is mistaken, because my vehicle IS ex-military and IS 1956 and IS front-mount 302...
Could my engine have been replaced thou touted as original, maybe. But the front mounts are original to the vehicle. What do you folks think about this???????
Also, what does the "L215" mean on that small plate? it is attached by two small screws I think.
Wish I had a digital camera to show you.


Heavy metal worker--up to 4-inch plate.... If you can't cut it, burn it!