I will soon be installing a CQ350 mount on my observatory pier, but I couldn't find a reliable source of information or technical drawing of the base of the mount head, where I would fit my personalized adapter for my pier. It looks like it uses the same fit that the EQ8 uses, but I wanted to be sure before expending money on anything. The manual of the CQ350 doesn't have a technical drawing of the base plate, however the EQ8 manual does, so if they really use the same base plate design, I could work from that.
I would also like to know if it uses the central M12 bolt from below or just the the two M8 bolts on top to hold it in place.
Below is an image I found for the EQ8. I would like to know if these measurements will work for the CQ350.

And here is what I found in the EQ8 manual:

Another information that I wanted is the exact name of the power connection of this mount. Is it the same from the EQ6-R Pro?
Many thanks in advance!