Ok its difficult to write for my, hope you understand it.
yes in Germany you must have the numbers olso on the front . and where you live you become an number combination for register you car . It exits different styles of the plates size. But you must look what will fit in Plates. in manny citys , you can not become your own Number and becomen an long Text of letters an Numbers, so the only way ist to usw Buig Nummer plattes . The place where you make the plattes is not importantly .
Only thing is ... the Low says it must be 18 centimeters from the downside of the Plate to the street or higher
sorry for my bad englisch