Turbo Pro Muffler - Optimal Flow, No Drone, No Resonance

@ColdCaseJoe: I have a 69 Barracuda with a 340 that is modified to about 370 HP. It has 15 year old Turbo Mufflers (Dynomax I think) that I got from Advance Auto for $20 Each. The car sounds Awesome with these mufflers. Fairly loud, but not too bad, and the idle rumble is great. They are starting to rust out, and I am really concerned that I might get new mufflers that would quiet it down too much and destroy the sounds I like so much. On the other hand, I don't want it obnoxiously loud. Which of the mufflers in post #1 would you recommend?