Pickup truck box welding in the North Bay area

Getting desperate as I need some welding done on the underside of my sweet old pickup truck box that is located in the North Bay area.

I have gone to a number of local city body shops. Unfortunately, they blow me off as they are pretty much focused on doing only insurance Collison work.

Does anyone know of any businesses in my area that could do some welding and metal fab on my truck?

Any and all leads would be greatly appreciated.

Thanks in advance,