Carphone or partner company do a parking sensor fitting service, about £150 all in, of course I imagine you are after a factory finish dash display or somthing, but maybe worth a look and call

http://www.connectmycar.com/parking-...FQoY4QodwTpWeA

as for the gear knob I know you want it new but maybe try foprd breakers and sniff around on ebay