I have a scrambler 400 and I have a k&n filter on it right now. I also have V-force reeds to put in and will soon be recieving my hpd silencer. I got just the silencer off of ebay not a full exhaust yet anyway. Should I change the clutch for this and what should I use. I do plan on more mods sometime this coming spring and I will re-clutch then. Do I need to clutch it for now. Also what do you recommend for jetting with these mods and should I buy the reed spacer kit for when I put the reeds in or doesn't that make a difference at all.