[Lynn Eades]

with all due respect I think your headed in the wrong direction.
That Tank Colin has, has the wrong track fitted to it.
It appears easy to do.Jeff Plowman here in N.Z. owned an LP2A with English track fitted on its original wheels. It chews things up a bit, but it works after a fashion.
You must have seen enough "boch ups" in the bush in the past to know that our fathers did stuff that we wouldn't put up with now.
I'm hope Richard can square this away ,by telling us about the difference in width between the Vickers Light Tank track,and English Carrier track.

Colin. I see the oil filler cap on your engine is very much the same style as the English fuel tank caps in carriers.