Nice truck seats

[truckin 79]

Found these seats in a camper special 79 1 ton truck. I talked about them a while back having a lot of mouse poop on them. I was hoping I could find new covers but someone thought that these seats are custom.
Anyone seen stock seats like this?
Also the drivers side inner fender of my truck is rusted out but only the part that has the extra metal with the 3 bolts holding it in. Is there a place to just get the triangle piece of metal for the inner fender. I tried pulling one off of another truck but it was pretty solid