I was looking on the Flypast website, Historic forum, and came across some photos of DG590, their Miles Hawk Major, and thought "what a nice thing to do with a Magister."
https://forum.keypublishing.com/showthread.php?144846-Montrose-Air-Station-Heritage-Centre
So I hauled out Volume 1 of Pete Amos's magnificent 3-volume history of Miles Aircraft, and started considering what to do. The fairings for the undercarriage, of course, and the tailplane needs to be raised and the rear fuselage increased in height. And a new fin and rudder. It turns out that there are rather a few more oddities in the quoted dimensions of the two types, most of which can simply be ignored but others seem rather curious, as changes in the fuselage length are not visible in the photos. Now I'm quite sure that if Peter didn't bottom the oddities, then no-one else is likely to, but I thought the photos nice enough, and the conversion tempting enough, to mention here.