I installed a new IO-360M1B and MT 3 blade from Vans on my -7, with the new 59B blades. I am VERY pleased with this combination after 100 hours. Takeoff and climb performance is outstanding, and I am dead even with my hanger partners 180/CS Hartzel RV8 in climb and cruise.The MT was incredibly smooth BEFORE I had it balanced. Weight and balance numbers came in right where I had hoped. A little pricier than the Hartzel, but prop includes a beautiful painted & installed spinner assembly. Literally bolt the prop on and you're done. Have flown in rain, soft fields and frozen lakes with no blade erosion whatsoever. Also using the MT governor supplied with Vans FWF kit, dead on at 2700 rpm/no adjustment was required. 12 week lead time on delivery from Germany and the prop is shipped to a local dealer for assembly and delivery.