After a lot of searching and several e-mails to Keith (escondidotundra), I decided to go with his muffler. He didn't have to, but sent me e-mails letting me know when it would be built and shipped. And get this ....it was true! (i have been burned before). It was shipped the day he said and arrived in perfect condition by the weeks end. I don't know squat about exhaust systems, so all I can say is, it was heavy and small (especially compared to stock). I went to my local exhaust shop (mom and pop, not chain). The guy installing had some concerns that it would be too loud and asked if I wanted to leave the resonator on. I panicked and said yes (figured it would be easier to remove it later, rather than re-install). It does have a great sound and seemed a bit louder than I wanted at first (I was wrong). After putting over 500 miles on it, I am ready to go have the resonator taken off. To give you an idea, my wife drove it and didn't even notice the new exhaust (good thing, because I didn't tell her!). Keith told me, if I remove the resonator, it will be a little louder, but won't hum in the cab. I don't know what "drone" is, so I don't think there is any. My brother has a Magnaflow with duals, and doesn't like it. I think when he hears mine, he will be ordering one. Anyway, whether you are interested in Keith's or not, I could care less. I felt obligated to tell my story and give credit where it is due. Keith went above and beyond my expectations in CS and product. YMMV.