Gene You know what I forgot is that this Kaos uses a nose wheel type engine mount and its likely that you may have to little room for a separate nosewheel block. The DB mounts are not set up to carry a nosewheel.

Actually I think this thread started because the four stroke engine would not fit the clamp mount that apparently comes with the airplane but come to think about it, since you are going with a two stroke now and the engine should fit so it all a moot point anyway. Just go with what the arf came with and there is no real point in changing out mounts and doing all that extra work work.

John