This is based off new Tamiya M4A3. Parts from Tamiya M-51 are pretty much drop-in except engine deck. Front has curve that needs filling and rear deck is too short. Radiator grill is a little short as well but they are easy fixes. Had to remove fender braces and reposition as 76mm gun tank has 11 and Israeli one has 9. Stowage boxes are from Dragon and most of the brass will be as well. Scale drawings from SabingaMartin has hull longer than the Tamiya kit...so.