Have finished my Panther mod (full mod on HobbyHavoc site http://www.hobbyhavoc.com/forum/index.php?topic=429.0abs)
some mods are: metal g/box, wheels and tracks... opened hatches... added track hangers and refined the tools... made MG, barrel and muzzel brake... made turret turn on one spot with no overhang... narrowed top hull by 25mm and lengthened it about 30mm... sloped back end and added gerry cans and engine grills...added other bits and peices of detail... on/off switch etc in engine hatch...
If you have a hack saw, heaps of evergreen plastic and some glue you can end up making a reasonable Panther
Cheers
Gra
