Ok so there has been some great advice in regards to your DIN install location. Even with aftermarket stereos it requires some messaging/imagination to make it work. Be flexible and creative. What is interfering with your install in the dash, can interference be relocated/modified (i.e. wiring looms, bracketry, etc.? If its the coax connection that is stopping you, will a 90* adapter make the difference . Sometimes tying back wiring looms or trimming bracketry behind the dash can make all the difference. If its climate control duct work that is your battle, you may well be screwed sir. These are things I've come across in the past that could help and sometimes just looking and evaluating the circumstance is all that is needed to solve the problem. If need be invite a creative buddy over to look at what you have. Sometimes a second pair of eyes on the job can make all the difference. Just make sure it doesn't f**** up anything else before you start the job.