I recently aquired a 1993 850, and am learning how parts specific this year is. The forum is great help in sorting the issues.
I'm still chasing a few parts, I'll post in the appropriate forum.

 

Welcome to the Forum.

The 93 850 is definitely the odd man out. It almost looks like it is half 740, half 850. The oddest thing is that they went with 4 lug wheels. That is the only volvo that has had them that I know of. Maybe the really old volvos like the 122 and amazon had 4 lugs wheels, but I don't know.