TX WTB: Sport Bumper Outer Brackets 73-80

[THE "10" SILVERADO]

Hello,

Currently gathering parts to start working on the rear end of the 77. Going to get a sport bumper in the future (once funds allow) but I need to get the brackets to mount it. As the inner truck brackets are super expensive, I'm just looking for the outer brackets from a truck/blazer/suburban as they are the same thing. Genuine GM only, trying to keep the truck as original as possible.

Thanks!