just installed a set on my ge. i would do one side at a time, that way you can line them up and adjust as needed. note: this is for genuine Mugen Ventilated Visors (not Mugen "style").
-first, install the brackets (or buraketto, LOL) in the appropriate areas with the flush side facing the visor.
-then, prep each individual piece of double stick tape with a 2 in. piece of masking tape (to aid in removal of plastic lining).
-roll down the corresponding window and pull down the rubber lining that seats the window until only the top two corners are seated.
-next, prep the area with isopropyl alcohol and 3M PAC Primer and position the visor with brackets clipping onto the inside of the door (so it's positioned under the rubber lining).
-now push lining back into gaps starting from the corners and making your way in.
-roll up the windows and position the visor so it's 2 mm. from the top and 3 mm. from the side where the doors meet.
-follow the above process for all windows.
-pull the masking tape and remove the plastic lining for the double stick tape.
-finally, press firmly along the edges of the visor to create a strong adhesion.
your end product should come out like this...

note: this process is not verbatim from the installation guide. i followed the measurement and improvised a few steps with help from this forum. i hope that this procedure aids in any future installations. hopefully it will persuade some 50/50 buyers to go with the genuine stuff. not only is it mugen and made in japan, but it's functional as well. i got mine from
www.jhpusa.com and it took about 30 min. to install by myself. thanks for reading!