I have my Escort 8500 mounted to a RAM Mount system. A two bolt RAM-HB1 base attached to the left bar controls mounting bolt holes. A 3" Standard Arm and the flat RAM 6"x2" platform. Velcro on the platform and bottom of the 8500. Rock solid!
I also have the ram mount.. but i used the 5" arm.. so the detector can
"see" over the tinted part of the windsheild... for laser ... I mounted my Passport 8500 on the left side .. because it was closer to run power to it..