You say you're going to race in Wellington? Why don't you just talk to a guy called Kelvin Wong (I think he's in Wellington somewhere) and see what he can offer you. He stocks the up to date equipment for onroad and SPARE parts for the cars he sells. Ask Pedro 51 for his contact details. Maybe you could get your brother to bring you a car (as thats what you seem intent on doing) that Kelvin carries spares for? I have to keep on reminding myself that your not a newbie, and that obviously you would know that a good car is a necessity, but a excellent driver is essential towards being fast .
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