The driver side mirror must have kissed a mailbox post of garage door rail somewhere in its spotted past. My piggy bank is full and I'm ready to order a replacement. However, I've run into a bit of confusion. 
Inside the mirror housing I can see what looks to be a GM part number cast into the surface. I can see all of the numbers clearly except for the last digit - 2028780x. I performed 10 searches on gmpartsdirect replacing the last digit (i.e. the 'x') with 0 through 9. I got no hits. I then searched the catalog by entering in the year, model, etc. and found the outside mirror w/heat. However it provided a part number of 10273679. My car is a convertible so the mirrors have black plastic wind deflectors attached to the inside surface with three pop rivets. The description of the gmpartsdirect mirror makes no distinction between coupe and vert mirrors. This is an expensive 'no returns' part so I don't want to end up with the wrong thing.
Does anyone know if 10273679 is the service replacement for 2028780x? Should I be able to find a new service replacement with the wind deflector already attached? or is it normal to have to drill my own holes and attach the old one to the new mirror. I don't mind doing this as long as the coupe and vert mirrors are EXACTLY the same shape, the only difference being attachment of the wind deflector.
Thanx,
-Floyd-

Inside the mirror housing I can see what looks to be a GM part number cast into the surface. I can see all of the numbers clearly except for the last digit - 2028780x. I performed 10 searches on gmpartsdirect replacing the last digit (i.e. the 'x') with 0 through 9. I got no hits. I then searched the catalog by entering in the year, model, etc. and found the outside mirror w/heat. However it provided a part number of 10273679. My car is a convertible so the mirrors have black plastic wind deflectors attached to the inside surface with three pop rivets. The description of the gmpartsdirect mirror makes no distinction between coupe and vert mirrors. This is an expensive 'no returns' part so I don't want to end up with the wrong thing.

Does anyone know if 10273679 is the service replacement for 2028780x? Should I be able to find a new service replacement with the wind deflector already attached? or is it normal to have to drill my own holes and attach the old one to the new mirror. I don't mind doing this as long as the coupe and vert mirrors are EXACTLY the same shape, the only difference being attachment of the wind deflector.
Thanx,
-Floyd-
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