I have had alot of experiance with flowmasters but only in american cars, i was gonna make my own exhaust system with a flowmaster but coming out the side in front of the rear wheel.. but i have to take the time to actually lay under the car and work out the fittings... one of these days i will... Any how, in my opinion flowmasters are very good, they sound amazing and had a good amount of power, the best places to buy them are
Summit Racing or
Jegs Well i hoped i helped... later