I got a passenger side inner fender for my 1972 C15 from Wes at
www.classicheartbeat.com (site sponsor), and it fit pretty dang good! I am pretty local to where his shop is and can drive there to pick up parts if needed, so shipping wasn't an issue for me. But the inner fender I bought from Wes, fit waaaaayyyy more betterer than the drivers side inner fender I bought 10 years ago. I'd have to go back through my receipts to see who I bought it from.
Gary