The Savannah ( and its design origin ,the CH701 ) are draggy, slo n' lo machines and the reliablity of 80 horses in the 912 is more than enough to provide the performance of the design........they both have other drag issues that could be addressed rather than add more pony power . A VG wing and 80horses..........sweeet
Just my view of course.......might be worth what you pay for!
^