Inspired by this thread...
http://www.gt86.org.uk/forums/topic/4907-focal-is165toy-installation-and-review/
...I have purchased and installed the same front speakers.
Following a combination of guidance from a youtube video and some of the original post I completed the job, by myself, in the dark on my driveway, on Sunday evening. It took 40-50mins from start to finish to replace all 4 speakers!!
I did not completely remove the door cards though. I left everything connected to them and carefully rested them on my legs whilst sat on the sills, working around/under them. A little tricky but no screws/speakers were dropped in the process. Each door speaker took about 10-15mins to do from 'pop this screw cover off' to 'quick sound test'.
The trickiest bit of the entire job was undoing the tweeter connections!
The speakers are definitely an improvement on the standard things and it's made me want to swap the rears now as I prefer to be 'enveloped' in my music while driving 😁