Well looking back at your pics it looks like you have a LHD set on your 89, and on your 92 you have a RHD set. If this is the case you now know what i was talking about having a RHD mirrors on a LHD car. Another case is the mirror glass may have been changed to a flat mirror.
However if this isnt the case, the problem though is as mentioned in the earlier posts is the mirror glass is exactly the same. Both are convex, what denotes them being LHD or RHD is the mirror bases themselves. On a LHD car the passenger side(right) mirror is angled in more vs RHD (left) side being angled in more.
Just to be sure when you stand in front of your car. Do you mirrors angle the same way mine do?
Notice how the passenger side is angled in more.
P.S. I have the P/N if you still want it
~JDMMA70
However if this isnt the case, the problem though is as mentioned in the earlier posts is the mirror glass is exactly the same. Both are convex, what denotes them being LHD or RHD is the mirror bases themselves. On a LHD car the passenger side(right) mirror is angled in more vs RHD (left) side being angled in more.
Just to be sure when you stand in front of your car. Do you mirrors angle the same way mine do?
Notice how the passenger side is angled in more.
P.S. I have the P/N if you still want it
~JDMMA70