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These are not mine so I cant comment on the difference with a CTT. I did have a set on my 04CS and the sound was completely different. very raw sounding. a great rumble almost a growl. The clamp on the end is stock from the p!g. you reuse the two you have on your p!g already. The CTT it came off of is having a compete new exhaust system installed so the clamp just happened to stay on it.