14 hours, 3 sliced open Fingers, 2 trips to the local audio shop, and I got my new Head unit in.
My celi had the Premium audio package, had to stip everything back to the amp, remove the amp and spend 2 hours testing cables to determine which where which speakers.. then had to rewire a whole new Harness back to the headunit. Spend 6 hours before I started and got 1 wiring diag from somewhere on the forums here and then was trial and error on the rest.
Would be much simpler w/o the premium audio...
But to answer your question.. I didnt fund much info on the Swap out for the permium audo.