I want to put new mufflers on my 1989 GT. It's completely stock with a stock catalytic converter. The two options I am debating between are the Flowmaster Super 44 series or the Original 40 series. I've been looking around to see what people think is better, but I keep getting conflicting information. What do you think is best and why? I'm looking to make it louder and have a deep sound, but I don't want a lot of drone if possible.