No.
The rear decks are 6x9 style speakers. I wouldn't put those 5 1/2's in the doors although they could made to work, I'd get 6 1/2's.
There are no crossovers in the rear deck speakers. The XOver in built into the amp under the back shelf, and there are 4 wires that go to each 6x9 unit. Highs for the tweeters, lows to the 6x9 "subwoofer". What comes out of the head unit is standard non-amplified front and rear line level outputs. Nothing that comes out of the Amp is really usable. The frequencies are split up in a non-standard way... Sub,Rears. Mid bass, doors. Tweets front and back. The dash center speaker seems to get mostly Mid-range.
Point being, is that you can use a standard 6x9 speaker for a replacement, but you would have to rewire them, bypassing any crossovers and connecting all 4 wires for each side, 2 +/- to the bottom, and 2 +/- to the tweets. Don't get lazy and tie the High/Subs' grounds together, or leave them together on the lugs of the new speakers. Amp Damage.
A better option may be to add an amp and standard 6x9's, stealing the rear inputs to the Monsoon.
BTW, the remote turn on wire is Purple going into the Monsoon. YW.
I left the Monsoon amp in mine. I replaced to stock center dash speaker with a single Infinity 3.5" I had, and the chimes etc still work very well. I tapped into the line levels running to the amp to drive 3 other amps. Front, Rear, Sub, and threw in my JBL stuff and a single DVC 12'.
