bro, u can try NVIRO. been using it for 3 years now. satisfied with it. probably just as good as V-Kool just that V-Kool is more popular. NVIRO is cheaper as well. i did mine for 1200, whole car. i'm driving a satria btw. also, the shop is located in USJ 9, the business centre, near Ah Koong Noodle if u know where that is.
i can give u the contact number of the boss if u want.