Just a point of observation: don't get too hung up on the bumper specifics as a means of identifying the truck. It is my understanding that Stovebolts were delivered to the seller without bumpers. The seller might put on a bumper, or leave it to the purchaser. If a truck has a hard life, that bumper might get changed out many times, each time with a possible later style that is more readily available than an obsolete earlier one.
Bumpers are add-ons, and not Chevrolet factory items.
I'm sure someone will set me straight if I got it wrong.
Bill
