I agree with beam axle suspension. Set up correctly it is a good performer. The 40 I am building will be my first with MII, all 3 previous were dropped beam axle. My 46 is MII and I like it fine, but maybe no better than beam set up. I recently drove a 39 with beam built by one of the old timers around here. I have never driven anything that drove better. In all aspects. Too late for me, MII is in place and will stay. Joe