Munch did you check out the Strapworks link at the bottom of the page? I just checked it out they have some buckels and footman loops. It was under metal hardware.
The only place I could find that had the buckel you had listed was Limeworks speed shop. They had it listed as a kit from $250-270, and they were only 1 1/4".
Speedway has these, says chrome/ 1.88" overall, 1.05" inner.