Anyone use one of these in an ultralight? I want to build an ultralight trike using my sled engine, Im thinking with 175hp it should be plenty enough. I also read on another site that the big 900-1000cc engines are good to use since they produce lots of power at a lower rpm? So anyways, just looking for opinions and thoughts on using such a large engine, Im thinking the downside would be trying to cool it enough, would need a good sized radiator for it.....