More on the undercarriage.
The white metal kit only came with four rockets. Somewhere along the way I picked up a set of rocket crates and rockets (unfortunately there were only two rockets in the kit and maybe 10 crates (?) 
). Oh, and I have a Russian trailer by Micro Scale Design, the Russian Army Trailer 1-AP-1. With so many crates left and no more rockets, I may build the trailer and attach it to the GAZ-MM (the tow pintle is a 3-part affair [just above the truck frame on the left]). I’ve left off the piece that’ll go through the pintle so I can add the trailer if I go that route.
Mike