I think once you test fit it you could tell better but I believe if you use an exhaust manifold extension you could angle it out Thur the fuselage and cowling. I have the OS FS-56-a and needed to use a 45 degree manifold to angle it out. Fits perfect but had to cut the cowling to allow the valve cover to fit. If I had mounted the OS inverted I would not have had to cut the cowl.