Who knows?

Longgone said

The 71-340 4spd. trans may have the code 757 in yellow, light blue, or light green paint. A white cross may also be found on the housing, an inspectors mark. HTH

Click to expand...

After close inspection, I found "751" stenciled in white, the large white "X" on top of housing.

White inspection marks in three different areas, one by the tailshaft mounting bolts, one by the shifter mounting plate...

Blue inspection mark by the top rear gear lever.

Light green inspection mark between the top and bottom lever.

Yellow under the front lever.

Orange under the machined pad for VIN.

This thing has a rainbow of colors.

I took pictures and measurements of hopefully everything.