Actually ALL of my Evolutions came with "long" plugs.
Check out this picture.
From left to right: Stock Evolution 2 Stroke Glow Plug, O.S. "F" 4 Stroke Glow Plug, Stock SuperTigre .75 2 Stroke Glow Plug, O.S. A3 2 Stroke Glow Plug
I've seen the A3 & A8 recommendations given, but I've found that from the PTS engine up, the Evolutions run best with the long plugs.
You can substitute the OS "F" plugs or other similiar long plugs such as the SuperTigre, etc.