Thanks everyone. I've had the drone with my 2 1/2 inch TTI with H pipe and Dynomax on my 69GTX for years. After reading the posts I ordered a couple Jones 2 1/2 inch, 12" X 4" mufflers, Summit JEX-A4512B, to use as resonators. They're aluminized and a little smaller, just what I wanted. Will report back how they work.

Jim