A while ago, I posted about an M7A3 BFIST I was building for a customer. During the build, I received some new info that it was the latest version with a larger optics box in place of the BAB (Bradley Armored Box - TOW box.
Here is the latest version M7A3 BFIST.
Here is my version with a scratch-built optics box.
Thanks Modelcrazy. It was a fun build. For those who might be interested in building one, I have drawn up plans for the optics box. They are not perfect, but should get you close. Also, there are great reference pics by Ralph Zwilling at this site.