I've got to replace a rusty floor and rocker panel--driver's side only--and am researching a supplier for quality material that's the correct thickness and fits reasonably well.  I know the usual sources, e.g., Carpenters, Mac's, Concourse, but I don't know anything about their sheet metal.  And I don't know if there are other suppliers I should consider.  I know a lot of forum members have already been through this and I would really appreciate any advice on where to buy these replacement pieces.  As always, thanks for your help.  Ron