Newbie help 65 c10

[ron19]

I have a 65 C10 stepside that I'm psyched about. Body is in fair shape, has a 400 small block with a T10 4 speed. I put some BF tires on it, dual flowmasters and new holly carb and it runs great. Before I got it, someone installed a homemade angle iron rear bumper on it that made it look sad.

For Christmas I got a new LMC chrome bumper and bumper brackets to install and make it look much better. My problem is that the inner straight brackets don't line up with the bumper when bolted in. I'm new at this and it doesn't come with instructions, so after much thought, I bolted the brackets on, the two middle brackets to the inside of the frame, and the two outer brackets to the outside of the frame, with no luck. The outer brackets line up perfect, but the inner brackets are 3 inches off from lining up with the bumper. My question is: Is this something that is expected from ordering new parts, to have some bending and fab work to get them to fit? Is this something related to LMC or has no one ever seen anything like this before?

This is a cool board, and I'm just nuts about my truck.

Thanks,

Ron.