never seen or heard of a vision with a cummins better cab than a 9200 better build quality than a shaker.
04 and up you could get Mack trans. and rears. first ones were all mutts eaton or meritor trans and rears
CL's were the only ones I knew of in recent years that had the Cummins...for those needing big displacement/high torque engines. Since the MP10 was introduced, didn't think they were too keen on using ANY vendor engine. Personally, I don't see the point buying a Mack if you aren't getting a Mack drive train.