I'm no expert, but this is what I know? 33 and 34 were the same cab, engine cowl, grill and fenders for the big truck and the pickup, of their respected years. Differences of 33 versus 34 truck. No Ford oval and V8 emblems on the side of the engine cowl. 33 radiator cap more resembles the 32. The '34 rad cap has a fitted chrome strip that runs down the front and encloses a small Ford Oval. Grille shells were slanted a bit for the 33 and 34. All have a cowl vent. Not sure but I think no SS trim around the bars of the grille on the '33. Byron.