Mirror Replacement.

Hi.
I am newbie. I bought a slightly damaged Speed Triple 1200 RS 2022 at auction.

There were questions regarding repairs.
1. One mirror is badly damaged. Is it worth buying an original one or is it better to just buy a pair of non-original ones? I don’t know what the owners think about the original mirrors. Is it worth trying to put “factory”? Is a mirror at the end of the handles convenient or is the traditional arrangement better?
2. The quickshifter linkage is broken. I can't find the part number for this part. In the catalog it is sold with the quickshifter itself assembled. Is it sold separately? What's her number?
Tell me (if possible) the total length of the rod, the diameter, the length of the thread on each side (or on one side if it is the same), the direction of the thread (if it is different)!!!
Perhaps someone can share a manual for adjustments (dimensions) when installing a new rod?

Thanks to everyone for their advice and help.
Best regards
Sergey