I recently purchased a 89 YJ project from a friend. It has rust in all the usual places, and I'm planning on buying the replacement floor pans and repairing the rusted out frame near the rear shackles. The weird thing about this jeep is that the, for lack of a better description, "posts" on the inside of the tub right behind the door opening are rusted out from the floor to about 8 inches above the floor. I have found replacement parts for everything else except for these posts. Has anyone else experienced this? I believe this is where the seatbelt attaches so it is kind of important.