So far here's what I think we know about your truck...please correct me if I'm wrong.
You have a 1/2 ton 1946 or 47 truck.
You have a 1946 cowl tag from a 3/4 ton truck (based on it's s/n).
You have a 1946 engine from a 3/4 or 1 ton truck (based on it's s/n).
You have a 1947 3/4 ton Title with the 1946 3/4 ton engine serial number on it. (My .02 cents...with a March build date on the cowl tag it's hard to believe it wasn't titled until 1947, but stranger things have happened).
The only other items that might indicate it's either a 1946 or 47 would be the date codes on the trans, rear, radiator and maybe the speedometer assembly. I'm not aware of any other parts having a date code on it...
Mike B
