I was wondering what cool mods anyone has done to a 2000-2002 ZR500. anything? Im extending my track from 121" to a 136" this year and was wondering if anyone has done this to a ZR500 not a 800-900. What kinf of power loss will i be looking at, and what would be my best bet for giving it more umphhhhh with out spending heaps of cash on it? :augen41: Cheers and happy sledding this year.