I just replaced my rear floor pans on the '72
El Camino and I have coated everything with POR-15.
I was wondering if I could/should lay on a coat of undercoating for added sound deadener on the top of the floor pans...I have coated the underside of the pans, also.
Thanks,
Baby Boomer Bill...aka 7T2SS

I wouldn't do the inside with undercoating. You jute and sound deadener should glue to the inside and probably wouln't stick to well to undercaoting. Might smell a little too.