Not sure how up to date this is, but last time I looked there was a MKII (ex-Alan Mann) at Holman Moody, a car built to 1969 Le Mans spec using all original parts at Bryan Wingfield and, if you class this as original, a Safir MKII at Mecanic Import in Belgium.
I am looking for a genuine, original, Ford built MkI race car, with full provenance and no disputes over its originality.
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I would say check with Barrett-Jackson auto auctions at www.barrettjackson.com occasionally or even give them a call an tell them what you are looking for.
They have sold a couple in the past and may know of something coming up at one of their future auctions.
They are selling a couple of replicas too today in Arizona and is also being broadcast on the SPEED channel on TV.