My DENON DTC-950R CD player's "sled" is 178mm, It fits fine into the 1989 RX7 coupe's dash bracket, which again has an opening of 179mm. The RioCar sled is in fact wider, 182mm, it does not fit.

I can make anything fit, but the RioCar install is going to invovlve some surgery beyond most aftermarket DIN sized head units.

Someone who knows the actual DIN specification from Germany needs to pipe in here.

Michael