RE: 4-STROKE engine is equivelent to what 2-stroke
Here are some shots of the "Real" GK, and one of what I sometimes call the "White Knight."
First shot is inside the front of the case, black arrow pointing to the ring that's not machined, showing the black color. Second and third show the GK rocker pedestal and the WK pedestal, the WK is still natural aluminum color.
Bill.