He is in that steel river industrial part, of you turn into that industrial area and turn right at the roundabout you'll see the sign on the roof in from of you....
Ask for Aaron, he is awesome at what he does!! Last time I was there he had Tinklers GT3 gearbox there so considering that gearbox is worth more than my car I trust him he has built my diff and a heap of mates and we are all very happy! Price was good too