Okay guys, it got here this afternoon. Here are the pics.

exhaust side:



transfer ports:



intake side:



It's not ported as aggresively as the SW V2 so I'm thinking it won't be as fast. Might get better mileage though. We'll see. The head is 30g lighter than the SW one and the bottom three fins are drilled. I like that.

The crank is very similar to to the SW other than the 1mm less diameter of course. Three scallops cut into the induction end. The SW has a cut on one edge of the crank that the Mach 2 doesn't have though.

There are three carb reducers included - 7.5mm, 8, and 8.5. The 8.5 was mounted on mine. I swapped it for the 7.5. A head shim and collet were also in the box. I added the shim as I will be running 30% fuel.

FYI - when I took it apart there were several less than tight screws. One head screw and two backplate screws. The carb was loose too. If you're not the type that takes a new engine apart first, I would suggest going over the screws.

I took a few more pictures - the box, right and left views of the engine, the drilled head etc. If anybody wants to see them let me know.