I have found one source online (blue oval.com) for replacement floorpans but,
would like to have several to pick from. any suggestions welcome.

 

Many places sell floor pans. Northern Classice Trucks,http://www.northernclassictrucks.com/ makes the pans and other floor parts



The only place I found one piece floor pans, from door sill to door sill, was EMS,http://www.emsautomotive.com/ The one piece pan was cheaper than the two parts most others sell.

I have never bought from either of these places but I have good things about both.