Rear speakers will NOT work. they are about a 1/2 inch smaller. The bolt patter is too small.
Lift both windshield levers
Start at side mirrors. #2 phillips and remove 3 screws (pull back the rubber boot- pull back hard, you will see the 3 screws). Mirrors off
Loosen or remove 1 screw on each side to remove the chrome nose piece just under the windshield. (rock and lift the nose piece, there are 2 tabs at bottom)
remove windshield 5 screws
Now go to the dashboard.
Remove the ignition center piece (post and grommet at front first, tabs at back)
Remove the 2 center pieces surrounding the handlebars (tabs, no screws)
1 very small set screw (small metric allen wrench to remove the knob) one one each side.
Keep track of multiple washers.
You should see the rest of the screws to remove the dash.
this sounds bad but not really. maybe takes about 30 -45 minutes
The first 3 screws are the most diffecult. You will swear you can't get a screwdriver on all 3 but the rubber boots are tough, just gotta wrestle them back to get a good angle on the screws.
"The best way to get a bad law repealed is to enforce it strictly." Abe Lincoln