Thanks for the comments guys. I did want an Allied tank, and the M4A1 75mm, with a cast hull, is my favourite variant. I also didn't want to do one until there was a working VVSS suspension.
The battle unit is on my list of parts to get. I need two more receivers first, as the one in the Sherman is from my Tiger, and I need a new one for my Panther.
Here's some more pictures from the build thread;
Cheers,
Rik