I am planning a speaker install and wanted to see if 8" door speakers might be an option with minimal fabrication (speaker rings and maybe a thick gasket).
Unfortunately I was having problems finding information about dimensions around the stock speaker mounting adapter in 2nd Gen, Non-Bose, 6 Speaker CX-5s.
So I took my driver's side door panel and a-pillar off, then took some pictures with measurements. I thought I would share the measurements and pictures here, just in case someone else goes looking for this info: