Man that Scope looks familiar

You can still get the 2" one as a one off for $650US.
The bottom hole closest to the tube is from memory is 58mm but it is classed as a 1" low profile 2" focuser. So it will accept a slight ly larger light cone buy about 6mm.
It is large but makes using all different accessories a breeze with the long travel and you don't have to worry about draw tubes sticking into the light path or slippage
The model is the 2006
Mark