let me start out with what I had before the upgrade. Hyperized P1 with 68 channel helical bars throughout the cage. Separator grate with 2 F2 rasp bars in the belly. loewen 8 bar concave with every other wire removed. I bought a used Hyperized P3 for $500 that had the extended rasp bars in the discharge end and put new chrome 3_4" spaced thresher bars ~$1500. New coupling and spacer ring (I had the old style coupling) ~$500. 1_2" spacer between coupling and star to get P3 rotor centered $75 from a machine shop. MSC parts, bolts etc ~$100. So I have somewhere around $2700 in the upgrade. Yes, I did the work myself with the guidance of HyperII. All in all it was not bad, just took a little brainstorming. Call me sometime and I can tell you more. 563.357.7992 It was well worth the effort and $$$ especially in green stem beans. Pete Hinrichsen