New floors and paint for my Valiant pick-up

I just got this old thing off my cousin for $600, slant, drums, 3on the tree, pov pack, love it!
Looks ok from the outside but the floors a gone!
It seams the farmer that own it let his dogs pee in the back, wich has rusted
the bed through and inturn the floorpans.
The floors are the same as sedan/wagon so its no biggy.
But apart from lots of little dents, the body is in good shape.