Try Mike Mayberry (goes by "King" here on the forum). He is prior owner of Mayberry Lincoln Mercury and still has stash of parts, so a PM to him might turn up something.
One other guy (Boyd Casey) on the De Tomaso e-mail list just upgraded to the SACO performance aluminum uprights, so maybe his originals would be for sale. Are you on the Realbig De Tomaso e-mail list?
Julian
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