What about the M113 mounting Hellfire missiles, or the M1A4 Abrams with the 140mm gun? Im not sure if the game can model a guided tank gun round with a 8000 meter range though!
Also saw a picture of a M113 with a Russian turret mounting a 100mm gun, 30mm gun, and all the other Russian goodies plus extra armor to stop HEAT rounds! It was titled "Russian can do!" on a M113 site. I'll go back to look it up and post it here or at least get the pic.