http://www.sdsefi.com/rv13.htm Ross did quite a bit of prop testing in turbo subie powered RV-6. I've e-mailed him a few times regarding performance, mx issues, etc. and he still thinks it's a good way to go as long as the Magnum hi pitch blades are used (at least for a/c w/RV type performance). Sent on the Sprint® Now Network from my BlackBerry® -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html