BEGINING TO WONDER

[grego]

HI ALL

I've had the bike for 2 months now. The odometer said 168 miles. The shop i bought it from said the owner bought it in error. Well as you all know by my posts i no nothing about bikes but am learning in a hurry. Since owning it i had to free up the coke cable was pinched. Adjust the clutch cable, adjust the back brake. Also found a nail for a cotter pin on the rear brake. Just today i was looking at the service manual because i have a tach to install. I saw a picture of the muffler and thought gee that doesn't look like mine. I read where if you modified the muffler you had to modify the carb, or something because if you do just the muffler the bike looses power. So now what do i have to do ? I don't know enough to figure out if i'm loosing power or if the other modifications were done. Seems like a lot of stuff for a 2006 with 168 miles on it. Here are pics of the muffler. I didn't think riding a bike was so much work.. If this isn't the stock muffler what do i do next ??

Safe biking

GREGO