Battle Standard Bearer
Additional Hand Weapon
What I plan on doing is the tyrant and Bruiser in with the Ironguts, The Firebelly in with Leadbelchers, the gnoblars in front of both units and the iron blasters to provide support. The stonehorn will be monster/big unit killers.. plus a nice distraction for cannons.
the extra few points can be used to give the firebelly a great weapon and a lookout gnoblar to one of the sb's, but im thinking of getting a dispel scroll or something else with points.
or could drop the stonehorn to beef up iron guts another rank or add more leadbelchers or even another unit.