I’ve had the 2600MC for just over 2 years now and looking at buying the 2600MM early next year
ZWO have all the set up configurations on their website ( including drawings and dimensions)
With filter wheel
With filter wheel and OAG
With filter draw only
2600MC and 2600MM Sensor to face of tilt plate is 17.5mm
As I solely use Newts I can’t help you with spacing but looking at the ZWO site Im sure the info is there you need
https://astronomy-imaging-camera.com...us-length.html
Cheers
Martin