true, its a distance. probably cost you a bomb to get the car towed here.
try calling as many garages for a quote, if they dont do it, ask them to refer to some one who does the job. you will get a better quote eventually. the dealers are a rip off, although the vauxhall recommends that the job be done in max of 4.7 hours, they dealerships charge you for upto 15 hours labour, making the job expensive.
finally, if its making a rattling noise, ground it, like i have done mate.
dont use the car.
cheers