I think the price is crazy. I priced a similar system for my m5 and they wanted 112k. I don't know why they don't offer it as an option it would prob be around 40k and we can finance it with our car. It's like when we take a bigger wheel with the car not that much more than comparing to buying as an aftermarket. I am now trying to figure a way of keeping the valves open permanently to give the std pipe more growl