Right now, I have the flowmaster 70 series dual exhaust (not true dual) on my 07 silverado. Ive had it for about a year and a half but I want something louder. Ive come down to either getting the cherry bomb extremes or the flowmaster super 44s. Its hard to decide because I like the aggressive sound of the cherry bomb, but I also like the deep sound of the 44s. I might also be open to the possibility of straight pipes. I also wanted to know if any of you had an idea about how much it would cost to make it true dual. Im new to this stuff so if any of this doesnt make sense, im sorry.