I just finished up a power jam build session tonight. Went too late on it but when the mood is right you have to strike.
Last night I started by tearing apart a new HL metal upgrade M4A3 105 which I was simply going to convert to a 75W with a hobby radio, BARC3 IR and maybe recoil.

Ugh, here is where I went tonight.

Urethane parts by Nick Aguilar. I am going to machine off the vision coupola and install an early split hatch. Also what you cant see is I leveled off the rear vent from the top of the bustle that only the 105 Howitzer model had. I will fill the hole with a blank out and putty it over maybe tomorrow.
Needed something to build while waiting for parts for Katy Cat, my EZ8 build, and not quite ready to build the 75 mount for the Half Track TD yet..