You can read all about the LG mod in the Revolver forum. Takes a little more than triangle stock. One guy just crashed his, pretty much destroying it. But the landing gear mod held. Pics available on the last page of the forum...
Regarding the Revolver/O.S. 15 combo, if you're going to buy a new engine, have you checked out the rear exhaust version of the DLE 20? Without having it's cowl all hacked up to fit around the side exhaust engine's muffler, I'll bet the plane would look really nice?
Regarding Pulse availability, there are a few similar planes available from China?