OK, a little embarrassed... but I can not identify these vehicles. Ral Partha, looks like 1987, definitely look like Battletech (maybe 2x LRM10s in the turret), tracked, pretty big.
Potentially could be O.G.R.E. vehicles, though I could not find an image there either.
Thanks. - update, mystery solved, these are Battledroid era Hunter Tanks.... very different from current Hunter Tanks. Best match might be something like the Sturmfuer tanks.