OK guys and gals, I need opinions.
I have a '02 Mustang GT Conv. automatic and it still has the stock exhaust. I am looking into Flowmasters and I cannot decide between the 40 series or 50 series, which is going to be the better one to purchase. I don't want it too loud on the inside because convertibles already have more road noise, but I do want it to sound good. Any and all opinions are greatly appreicated.