Please keep posted on choices.I also will have exhaust installed.I am not impressed with the factory system,esp for 10,000.00. Who will you have install your systems??,I do not think a Lambo Dealers will install a aftermarket system,I may be wrong...Anyone know anyone who will do a install in South Florida....I also like the GMG system,but I also like the valves and the GMg may be to loud ALL the time....