IMHO the Boss kit would be a very good base for creating of the tug. Additionally the kit contains the semi-trailer. It is possible the wheels can fit the Ty-141 launcher and could be used for making it from scratch.
I'd love to see a 1/35 M-55S kit. These were the Slovenian upgrades to their T-55s with a 105 mm Royal Ordnance L7 with a thermal insulation jacket, reactive armor, digital ballistic computer and gun stabilisation, a new gun sights and laser rangefinder, an improved engine, and new rubber-metal tracks amongst other things.
There was an AEF Designs kit done but it is rare as...: