Back story: Imagine if the Aussies had decided to build a tank based on the Churchill instead of the Sentinel they did build. Cast hull and new turret. No shot trap in front of the driver, better shaped turret and hull, 25 pdr lengthened 10 calibres for better AT performance against weak Japanese armour while retaining the excellent HE punch of the 25 pdr for infantry support.
Scratch-built turret, though it does have an M24 look to it, to be sure. I kept the same height of the Churchill turret but moved the hatches a tad outboard to account for the larger breech of the 25 pdr. I imagined a better, shorter stroke recoil system that would have allowed the system to stay under armour and to limit the stroke to something that could stay within the Churchill's relatively limited turret ring. Better ballistic shape to the turret with a narrower front, slightly elongated nose to put the trunions a tad further forward for recoil management, a heavy, external mantlet with integral co-ax and sighting telescope with a back-up American style sight periscope. Gunner and commander on the left with loader to the right. Enough room in the ballistic shape of the rear of the turret for the radio, the good old No.19 set.
Aussie railway gauge was a bit larger than the UK one so the need to remove the air cleaners and have the narrow hull didn't exist. The Aussie designers took advantage of this to shape the hull sides better and get rid of the side doors. This provided additional stowage space for ammo and crew kit but also provided additional stowage points on the sides for blankets and tarps.
We kicked around a lot of the concept about a year ago when I started it.