Questions about Skywatcher BKP250

[Michael11]

Hello all

I'm about to purchase a new telescope as a replacement for my 200mm eq5 newtonian. I'm going for Skywatcher 250mm newt on EQ6, and I hoped you could help me with a few questions:

1) What is the OTA diameter and length? I couldn't find this info, and need to know if I can get it through my Mazda3 rear door.

2) I'd like to mount it on losmandy-style dovetail plate. Which accessories will be needed for this? I'm not aware how to fit a losmandy plate to skywatcher rings. Are new rings necessary?

3) Also I saw there are several models for 250mm model: explorer, black diamond, etc.. What are the differences except the focuser? Pyrex mirror? or something else?

Thanks in advance and clear skies,

Michael Vlasov.