Dragline-

Regarding your engine question. The Evolution will be a more powerful engine than an OS LA. I would try to re-use it if there is no damage. If it turns over fine, it should run. You said you couldn't test run it easily. I disagree. My engine test stand is about the simplest thing around. Take a piece of at least 1/2" plywood and cut a rectangular slot in it the same size as the engine. Drill four holes and mount the engine. Screw a couple of hooks in it behind the engine to use rubber bands to hold down the fuel tank. Then attach a pushrod to the engine to work by hand. Clamp the whole assembly to something solid. I use the stairs to my deck. Start 'er up.

If you do decide to get a new engine, try the Magnum .46. Magnum had them on sale recently.

-Scott