Need a 1972 Chevy truck PROMO rear bumper

[AZPartsLocators]

I just purchased an extremely nice 1972 Chevy truck promo but it was missing the rear bumper. I had assumed my 1972 dated rear bumper would work but It didn't have the reverse lights attached to the tail lights. I need the correct one. The earlier chevy truck promos up to 1970 didn't have the reverse lights as part of the rear bumper so I just thought the 1972 would be the same but for whatever reason they were made different. I really don't want to modify one as I bought it as a collectible item. Have tons to trade.

[AZPartsLocators]

Ttt