A one-off sand casting is not too hard to obtain. A local foundry may take an interest in such a replication.
My local car club had emblem plaques cast from aluminum back in the 60's and one of our members found an original and wanted to recreate these nostalgic items. They were about a pound of aluminum 4 x 6 x 1/2" thick and quite inticate. A local place made molds and cast us up about a dozen of these for $20 a piece. I am sure the mold for a lunette and the casting would be fairly reasonable. It would be the machining that might cost you as the casting would likely require turning to fit correctly into the bushing blocks.
The bushing blocks could be cast up easily as well.
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3RD Echelon Wksp
1968 M274A5 Mule Baifield USMC
1966 M274A2 Mule BMY USMC
1966 M274A2 Mule BMY USMC
1958 M274 Mule Willys US Army
1970 M38A1 CDN3 70-08715 1 CSR
1943 Converto Airborne Trailer
1983 M1009 CUCV
1957 Triumph TRW 500cc
RT-524, PRC-77s,
and trucks and stuff and more stuff and and.......
OMVA, MVPA, G503, Steel Soldiers
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