In M3, didn't Kev himself say his off-season body weight was 200-210? 200-lb is already light enough. No need to exaggerate and claim he was 175-lb. He may have been that light in the Burning Hollywood YouTube video posted here, bu that's about it.
He was probably around 235-lb in contest. Maybe closer to 250-lb at his heaviest, but I don't think he was ever 260-lb, although I've heard that number claimed before.