this is the 1/6 scale, its meant for engines .19-.35, its an extremely light plane, so im pretty confident the .28 will be fine, if its not, i'll just throw a bigger one in it, as for the fake cylinder heads and all that, im good at carving wood and everything, so im thinking about just getting a nice balsa block and looking at some real pics of the cubs engine, and carve it out, then paint it the correct colors.