After powder coating, the kit blends in so seamlessly, its looks and feels a part of the bike. I have one installed on my K3 too, and that frame was untouched. Usually people think that these are good to have in case there is a top end issue, but there are so many other benefits too. Installing the engine into the frame is a breeze, installing and working on the carbs and air box is SOO much better with a lot more access and room to move tools around tightening down clamps, installing hoses etc. etc. I just did ALL of this, so I'm talking from my hands on experience.