Kevin,
As for the body, since you have the gastank behind the seat if it has a side cowl vent it's either a '49 or '50. Look at the firewall in the engine compartment. If the indented areas on both sides are smooth, it's a '49. If there are strength ridges stamped in them it's a '50. 2 ways to tell if it's an early or late '49 is the center strip in the headliner and the cab windlace around the inside of the door openings. If the strip is held in with screws, it's early. Late had the floating type. If the winlace is held in with cilps and screws, it's early. Late had the slide in the track style.