I used the din pocket. I cut off the top so that the bc and turbo timer kinda just sat up against the edge of the top of the pocket. it hasnt budged since. as for the gauge, there is a bezel going forward and a bezel going straight out. the bezel the goes out is actually behind the abs glued to it. the bezel that goes forward is fit into the hole. let me know if i can be of more assistance.