A couple questions, if I was to buy a used land rover version mk3 would it just be plug and play? Would I have to input a code or anything to get it to work with the x5 and radio. I read somewhere you might need a code from the dealer and your vin number but what if the MK3 is from a different car or better yet a land rover, would i need the vin the mk3 came from? Also would the cd map from the bmw work in land rover mk3 or would I need there version. I was considering replacing with mk4 but its just too expensive right now.