Nice! Glad you had success with this as well! Can't comment on the questions, although I did the dash speakers only so that i could easily swap them back if there was any issue. The door speakers require drilling out rivets etc so can't go back easily.First thanks a lot for this thread for the audio insights.
I went ahead with @jon7chow choice of reference speakers - plug and play with the ebay adapter he mentioned, and the difference is already night and day!
A few questions that could be audio/warranty related.
I noticed that my left headlight is brighter than my left. Now sure how it was before the upgrade ( I believe it was still brighter ).
1. Would the 60W speaker upgrade vs 20W stock cause any electrical issues?
2. Would upgrading audio void warranty?
Thanks in advance!
Based on the performance of the 3.5inch infinity speakers, I doubt I will replace the doors anytime soon. I do find the bass from the doors a bit muddy, but the clarity of the dash speakers is amazing.