Syncro 4&4 Discussion and Q&A last answered over 2 years ago.
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I think the one on eBay is the one that Russel made a few years ago and was fitted to a Silver van he built and owned. The van was sold to photographer friend of Jakes called Al and then we found a buyer for it who was a fella called Russel. The wheel carrier was removed and a Syncronutz one fitted when the latest owner had it and it crops up for sale every now and again but never seems to get fitted to a van.