best carpet & interior source?

[yossarian19]

The upholstery guy says next Friday I'll have the bench seat back. Before I reinstall, though, I want to get some paint & some carpet in the cab.

Who has a good, well-fit carpet kit? I think I want something with backing and would prefer it go all the way back to the rear wall, since I don't have a gas tank in-cab anymore. If it's a great kit but stops where the gas tank used to be... I might live with that, since I'm likely to be stashing tools behind the bench seat anyhow.