Just thought id share a video of a Kue Ken crusher that i line bored a few months ago. I.D of the bore was 325mm bored out and sleived to suit a new bearing! YouTube - Line Boring kue Ken crusher.
What kind of system are you using? Is it electric? It looks kinda big and bulky for some smaller jobs. We use a small hydraulic motor and cylinder to turn and advance the bar. It has a power pack that sits in the truck.