Thats not the correct link. Here is the one with the triple gauge cut out.

http://www.4x4wire.com/forums/showflat.p...rue#Post1207345

I can not find the regular cut outs, but what you do is mount the radio to actual cage and mount the bezel at the corners. As far as what they are made of I can not remember.

91 Montero LS "Sandstorm", Auto, Dual Bouncy Seats, 2" Suspension lift, 2" Body Lift, GENII front IFS, 32" MT tires

89 Raider "Trailbreaker", 3.0, Auto, Dual Bouncy Seats