Contact magazine #77 had an ad for a KR2S project - I don't know if it has been sold yet. Also a 3100cc - Big Boy Corvair and a Subaru 2.2L new 'crate' engine with new RFI direct drive and ground adjustable prop ( Richard Allen Email: r...@snowcrest.net ) . Also in 'Contact' is a propeller 'story/discussion' by Paul Lipps (Elippse Propeller) that might change some of your thinking about propellers. This is not an ad for Contact; just noting another information source Gary