I've been bit by the modding bug!
Case in point, your looking into exhaust. There are tons of great cat-backs out there but it seems more and more are turning towards true duals, including myself. Look into duals and see if that may be a mod you can see yourself working with so you can skip ORY and cat-back step. Good luck, and stock up on credit cards.
$$$$$$$$$$
before i spend all of my money. i never thought id spend as much on a car as i have my yz125-still not there yet either, but from the looks of things im going to. 
