I've run the 2 series since the 80s
Mocked up this don't have a 266 cylinder apart to show the young guy's the difference.
View attachment 188626
This is a 268 setup on a 266 bottom end.
The 266 has a two piece ignition the 268/272
One piece.
The top covers aren't interchangeable unless you butcher them.
Adding holes the fasteners are in a different location
View attachment 188634bad crank in a 268 in the other bottom end.
built this was immaculate 24x4ft lifetime warranty advantech 3/4 plywood bench this morning.
I get free sheets this size.
Lifetime waterproof flooring makes a good surface.