I bought one over a decade ago from Robert Davis. He had a few made up special back then I think.
It's the stock aluminum piece with a (stick?) welded aluminum face on the bottom to take a spin on filter. I guess if you have your aluminum bracket and could find an aluminum adapter face someone could weld one up.
(Still have a few of those damn cartridge filters laying around too...)
61 II 109" Pickup (Restomod, 350 small block, TR4050)
66 IIA 88" Station Wagon (sold)
66 IIA 109" Pickup (Restomod, 5MGE, R380)
67 IIA 109" NADA Wagon (sold)
88, 2.5TD 110 RHD non-hicap pickup
-I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.