Greetings: Here is a recent conversion of a Heng Long M4A3 Sherman to an M-7 variant which includes a Vandra resin upper hull, a 3D printed 105mm Gun and lots of scratch built parts. This was a very challenging project as no instructions were provided, so if anyone else out there has one to build, PM me and I can send you a 66 page set of color instructions that I wrote.