Cut out the old sheet metal leave a lip of the old pan so the new one has a place to set, then weld in place.
The spray in bed liner, you can get that at Napa I think it is one of the best.
The Drain Tub after you get the machine painted and after you have installed
your insulation and tank then solder in the drain tub.
Paint and art work I'm doing a Vendo 56 right now I will drop you a personal message Friday
on measurements and a few pictures.
but to be honest restoring it as a Pepsi would be cool that bright Pepsi Blue