I am looking for a rear bumper for my truck, does anyone know if this will fit

Thanks

 

Bumper is same as used in 79 but mounting brackets will probably need to be modified

 

Step bumper or contoured bumper?

For the contoured bumper, I had to extend the rear brackets and re-drill the mounting holes to match the frame holes. The outrigger brackets also have to be sectioned and re-drilled. As modified on the left, compared to the stock bracket on the right: