Here's how to remove the STD HU and Door speakers:
Remove gear stick trim - it clips out.
Pull out side silver trim - 3 clips hold it, a firm pull towards the back of the car will un-clip it.
After this, the ash tray / lighter will be easy to remove.
Remove the 3 screws shown as well as on the driver's side. Now you can pull out the whole HU /climate control assy. Un plug all connections.
To Remove door trim, i use the following:
The armor all acts as a lubricant and helps the plastic bits to slide without scratching. I picked up the bent screw driver like tool from a horse supplies store - i think they are used to het stones out of hooves or something... but its th eperfect tool for this job!
All you do is to lever the trim of the door handle and it will pop out. Remove the 2 screws inside the handle and also remove the trim behind the door lever and remove one screw from there.
Remove sail panel mounted tweeter - it pulls out too.
Now youre ready to pull the trim off the car - get you hands between the trim and the door skin at the bottom of the door and pull out/up, you'll here the clips pop out. Disconnet the wires and lock cables.
Removing the door mounted speakers is easy - remove all the screws holdig them and disconnect the plugs.
Here's a pic of all the things i removed this morning:
And its really important to have back up ready and waiting should you need it:

Never Argue With An Idiot... They'll Drag You Down To Their Level And Then Beat You With Experience.