patch panels for panel truck

[chris mc bride]

My 69 panel is in need of some repair panels. Mainly its all lower part just beneath the lower molding. Both sides need to be cyout and welded back in.Plus the floor baord has few bad places and the rockers are both needing work. Right door will be replaced.What else Im not sure about yet.
What Im having problem with is lower quarters from rear bumper to doors almost and finding replacements.I know they are basicaly like truck parts and have been told only differance is the little step in around fenders.Not sure how accurate this is. Is there anyone who cares Panel truck specific parts,I know they are lot more limited production than the trucks.
Figure floor boards will be regular truck stuff and hope door is same.
If know of any differance from truck or anyone who has quality parts for this let me know.This will be my winter project and then some. Hopefully once I get paying membership I can sell some of the good stuff off truck and help finace the restoration partly,although small it will help.Less imaganation will be good thing too.In some case good mind is expensive to use.
Any help is appreciated.