If you go to the Pics section, and download the second video from my Walden post, I raced a brand new Artic Cat 400. He had K&N filter, Carb, and a pipe. I have the mods in my sig. I kicked his ass bad. I'm not sure about your guy having nitrous though, that might get you. If you can shift fast and drag a lot and are confident, I say go for it. Get yourself some haulers and maybe a bigger port. Some Reeds wouldnt hurt either. Go for some CPI In Frames. lol