I served on the TOW Mutt for 3 years.I'll see if I can find some photos showing the items you are asking about. However, I can still provide some of the information you are asking about.
1. The standard issued radio for the TOW Mutt was the AN/GRC-160.
2. The MGS was mounted with the battery facing towards the front of the Mutt. There were 2 cloth straps on the Left and right side of the MGS.
While I searching to find some photos for you. It's been nearly 40 years since I took them. Here's a link that should help you out.
If you have more questions feel free to ask me here or via email. If you send an email include Tow Jeep and Missing-Lynx in the subject line.
a good basic link is:http://www.globalsecurity.org/military/library/policy/army/accp/in0546/lsn1.htm#fig1-2