There is one vendor I found that has Kilt Belt Dees with the "bump-out" on the end: www.abbeyengland.com
Search on KILT BELT DEE 0080 BRASS 21/2" 65mm, item #C250AR.
The dimension is given as 2-1/2" but I think that is out to out, not belt width. Cost is 2.25 GBP each.
They do have a minimum purchase of 25GBP, but it appears that can be made up of multiple items. There are enough goodies there, including Sam Browne fixtures, sword hooks, tools, and so on, that you'll have no problem meeting that requirement.
This is the only vendor I could find - none in US, and one dude in London/Bahrain who wants $18 each in bulk of a dozen!
Shipping to US will be high, but This appears to be sole source.
