[OrrieG]

The seat cover looks like an upholstery shop made it. Aftermarket guys have replacements you can install, or a local shop could make one using that as a pattern if its what you want.

Welding cost is subjective, best to get bids locally. I ended up doing all of mine because the best price I could get locally 10 years ago was $250 per patch panel (labor only), welded in and ready for final body work. that was for cab corners, eye brows, hinge pockets. I would expect steps and floors would be more because of the work to brace the cab and more fitment, making sure the doors align right, etc. The guy was basing it on $50 per hour shop rate. Other places would not do the piece work, they wanted the whole body work job.