Apparently there has been quite a few configurations of resonators and mufflers between the gt trucks and non gt trucks. I also have a 21 Durango R/T with town n go package, so it has the srt exhaust. The gt ram sounds very similar. This peaked my interest in pursuing the exhaust for my 22 laramie. I crawled under it and by the looks of things, I have both the correct resonators that a gt would have, but a non gt muffler. It is definitely louder than a non gt, but way quieter than a gt. I only ordered the muffler/lh resonator assembly, so fingers crossed my rh resonator is already right. My dealer said they are available and out the door price was 685 usd.