how does it sound?? do you have a clip of it??

No sound clip, honestly the video/sound clips do not capture the true sound. It sounds amazing and I'm sure anyone who has heard in person will agree!

Is it just me or do they not fit well in the cutouts?

I've got the same setup except mine do fit in the cutouts. Not sure about the inconsistency but I love my exhaust.

I lined them up, I bought a clamp and connected it on the hanger to even them out. Took a couple of minutes and was an easy fix! Although, for whatever reason they are not perfectly aligned so you can get them pipe ends even but the rest will not even out. The performance/sound more than make up for that small issue so it's no big deal!