In the absence of any second hand Witter CL73 tow bars popping up for sale, has anybody found any alternative?

I have seen this one on eBay, which looks a decent price for a new tow bar.

Any experience of it? It looks like it should be the same as the Witter, i.e. to make it fit will require a notch out of one of the arms that fits into the chassis leg to accommodate one of the AYC mounting bolts.

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