hey, propigskin,, i have a 74 mt250 and the guy i bought it from had another exhaust for it, the stock one was on there and the aftermarket one is a race lookin pipe ,and on one of the two small leg guards, there a sticker that says "honda" , and "torque" and comparing the stock pipe to the aftermarket one,, Stock: my bike wont even really pic up the front wheel if i try. Aftermarket: my bike will pick up the front wheel and hold a wheelie into second. so if i were you i would look for a n,o,s or used honda pipe labled "torque" ! oh yea,, and its loud as hell (lets just say everyone knows ur there)
~ jeff