I am interested in buying some exhaust systems for my subaru performance business. I would like to know if your systems are an off the shelf item or do you make them to order? I would be specifically after 3inch stainless steel from the turbo back to the rear of the car(full exhaust system) I would be requiring systems to suit 94-00 WRX and also another system to suit 01-07 WRX. If you could let me know how much in Australian dollars they would be so I can organise the purchase of some samples for testing. thanks