Good adaptation. I didn't recognize the Mauler as the IK bulette until I saw your model in comparison.
On the topic of IKRPG models, now that we have the Soul Stalker, is there any word that more models might get released to support the RPG?
My guess is no, but in the future, I hope they do either a Mini-Crate line to support it. Another possibility is that they digitally sculpt them and make them available for cheap download and home printing, but that seems unlikely.