Those resonators will keep the raspy sound out, so keep them.
Also, most youtube sound clips of G8 GT suck big time largely because the microphones in cell phones are meant to pick up voices for talking.... and not high definition/high quality audio. I've heard video clips of my current set-up that made the idle sound awful.... Depends on the phone, but you need a REAL microphone for REAL audio....
When I got my solos I already had the X-Pipe, I was worried it would sound awful. Yeah.... it doesn't.
When it is started cold, it rumbles a little more. When it is warm it is a subtle growl that absolutely anybody would love. I haven't put the headers on yet, but I was absolutely thrilled when starting up after putting the straight pipes with Js
The video below is the best quality I found, and apparently he has the Kooks Mids, X-Pipe, and Solo Axle-Backs.... So, it should be a good indicator of the sound. Though, the microphone is obviously correcting for volume, because it'll be louder than that.
But anyways, yeah.... if those resonators (not pup cats) are deleted, it's going to sound like a farm truck... (Somebody else's description, not mine LOL).