Making progress - albeit slowly ---
I've got the wing mods all done, although that didn't go quite to plan. While trying to save it from dropping onto the floor, I caught it with my legs and promptly broke it in half. Anyway, all repaired now.
Top two pics show it compared to an F-82 (I've started to do some panel line scribing on the port wing), third pic shows the modified Tempest main u/c, I shortened the legs right down to the minimum and then re-shaped the doors to look more Supermarine. Last pic shows that I used the Tempest tail wheel too, but because this is a much bigger wheel/leg, I had to move it into an area which could house the u/c bay. It's still in the tail assembly group, just that it now would mount directly to the tail assembly joint frame instead of being right at the rudder hinge.