I just got a right front from here,http://www.classicfabrication.com/ its' not listed on the website, but they make a full set. Website needs updating, no prices... I paid $120 shipped. No online order, you'll have to call. also try www.autobodyspecialt.com I haven't installed my pan yet but did a test fit and it fits really well, there won't be much trimming to do.
I know it might not be show car level stuff but I needed a small section for my dart so rather than spend 100+ on some steel I cut up an old door I had out back. Its solid and I was able to cut out the rusty floor. Not for everyone but just an idea.