(05-08) must use gmos04 unless bypassing amp at monsoon amp plug. Harness 70-2003 will require the loss of the center speaker unless tied into a left or right front channel. Tweeters will also have to be tied into front channels or aftermarket 6.5" component set recommended. A 4-ch amp can be wired in at the amp plug Instead of just bypassing the amp. Of course new wires can be ran from the radio or amp as well.
I think this is what I should use