Right now I am running Edelbrock shorty's, no cat, and a single in single out Super 40 Flowmaster (dronemaster) muffler. I was wondering what are the other exhaust systems out there, preferably not Flowmaster, that offer about the same loudness or mildly louder than the Super 40 exhaust? Thanks.

Read the "what's the best exhaust? What are the best headers?" sticky at the top of this forum.

Then dump those crappy Edelbrock headers for some Dyno Don 1 3/4" headers, put some dual 2.5" Magnaflow cats on Don's y-pipe, and get a Magnaflow cat-back.