I had a TRS and RS-3 yoshi's on my old 05 600 and when they were cut (both of them got chopped) they sounded better... Much better, and a little louder. Nothing like open header. i just hacked my micron on my 05 750. Sounds amazing. I only cut 4-6" off of all of them, only because I like to keep the nameplate and dont want it to be too loud. You alos have to repack the muffler. You will have about 5 layers of steel wool wrapped around the resonator. Take it all off and rewrap it with 1-2 layers. Also throw out the fiberglass packing and get a MX style packing for 4 stroke. Its all pre-packed in a mat that is just wrapped around the resonator 1 time and the rest cut off. Trust me, I've cut many many pipes down for mine and my buddies bikes. If you cut too much or dont pack it back up, it will sound like shit. Plan it out and do it right.