Bedliner in fenders?

[OrrieG]

I used a rattle can type from the paint store and has held up good. It has some flexibility and healing ability. I put in on the bottom of the cab, up the firewall to the point it turns vertical and inside of the front and back fenders. My truck was originally undercoated, but had one front fender replaced along the way that was not. There was a significant amount of eyebrow and surface rust on the not coated one. If you do the lower firewall make sure you keep the weep holes for the vent area open (look like little flaps with a sheet metal screw at bottom of cab hinge area).