Subaru Speaker Adapter

Acquired a pair of OEM "Upgrade" speakers from a ~2010 Impreza, but the brackets needed for the front doors of my Forester of the same year are quite different. Adapted the previous model's size to fit the ~5 1/2" speaker, and added holes for a 6 screw pattern with a low effort attempt to fill the original holes in the model.

This is a low effort part, completed in Tinkercad, and is FAR from perfect.

Printing one mirrored should fit the passenger side.