I had an idea!

[catalyst2]

For the Forth in SST, at least some of the Robogear war walkers might quite good proxies. A bit of modification of the cockpits to close them in and they should be ready to go. Hell, there's even a spider walker which could be an excellent proxy for the Forth spider battlesuit.

Food for thought - of course it is yet another range that is OOP but that seems to be my fate these days!