Yes, good advice, I pulled the rear subs out and tested them and tested the amp ch outputs..i had to fix a loose wire post one one, but are good, and so ordered surrounds for them as the are shot..and ordered a used set of OEM tweeters which tweeters and surrounds might be here tomorrow, so I'm be pulling the door panels to look over the mid's surrounds, , and I'll install the tweeters, 270 ohm caps when the arrive, and re-tint the two windows while the panels are out of the way..last owner installed 20%..geeze