Replacing floors in a 2002 Suburban 4WD 2500. Need source for steel.

[Stephen W Smtih]

Looking for a source (and maybe one someone has used) for new floor board panels for my suburban, Drivers side has rusted through so plan is to get all 4 panels and have them welded in at once... (front and back) anyone have a source for the panels that they like.  Would appreciate any assistance see images of our Beast below.  It was a State Police Truck, used to tow the motorcycles for the former NJ Governors motorcade, have had it for 9 years now, we use it gently other than towing the boat to and from the river each year. It is the great truckster.   Stephen

[Tahoe02]

Google search. Good luck.