body mt - rocker panel,what is it called?

[tow guys]

Sounds like the floor support. Where is it located? Front or back? Driver or passenger? If you take a flap disc to it you will find the spot welds the factory used to install it. You could drill those out and replace with a new pc. If it's not totally rotten, you could cut away rot and patch with new metal that way also. I had a couple on my truck that were bad and did both. I can tell ya from experience, I wish I had replaced the whole thing.