I have read multiple times on multiple AMC forums that the metal louvers from and AMX will cross onto hornet, concord AMX, and spirit (sx/4). I Can now say this is not the case. I recently purchased a set metal ones off an old amx and a NOS set that the owner swore was for some AMC, but could not remember what.
This is a random plastic set I have that fits SX/4-Spirits
This is the side view of the AMX louvers sitting beside them (these are heavy duty louvers), as you can see the AMX louvers are to short for the spirit glass. The set closest to the bottom are the mystery louvers.
These are lighter than the AMX louvers and smaller. The guy selling them swore they belong on an AMC and offered a refund if I can't match them to one.
The 1/4 louvers have a lock and rod set of some sort.
I need to ID these soon so I can either refund or sell them. Any tips appreciated.