[DavidG]

Your truck has a very early chassis frame, not the first version, which had no 'legs' on the center cross member to form a K, but the second iteration. The purpose of those pieces riveted to the center cross member at 90 degrees is obvious in the photo below as it contains the inner socket for the pedal shaft before a separate pedal bracket was adopted (the one in the photo is obviously bent out of shape, unlike that on your truck's frame). Like yourself, I have no idea what purpose is served by the counterpart on the right side, especially in a LHD chassis.

Your front cross member is an early Model B-only version with wider spacing of the motor mount insulators than all of the '32 front cross member versions that followed (for both fours and V8s). Another example is shown below as is an extremely rare example of the insulator originally used with that cross member. Also shown are the two versions of the Model B front motor mount bracket reflecting the different insulator spacing. The wide version is quite rare. It is well documented that parts obsoleted by revisions weren't scrapped, but rather were used up on commercial vehicle frames.

I note in your first photo that your truck has one of the earliest versions of the firewall. It also appears to have the carryover Model A hand crank guide/spring U-bolt retainer with a small crank extension hole and two slots for the 'ears' on the hand crank extension rather than the later version with a much-enlarged hole for the extension and no slots.

Your truck may or may not have a low engine number (VIN) as nearly 40,000 Model B engine and transmission assemblies had been manufactured before the first one was installed in a production chassis (because of the decision to delay '32 model production until a production version of the V8 engine became available). There is evidence that once Model B vehicle production began, no particular effort was made to use those engine/transmission assemblies on a first-lin/first-out basis.