Hi i own a 1997 Ninja ZX-7r. 1) I was wondering how much horsepower my stock bike puts out to the back wheel. 2) Also, whats the differences between a slip-on exhaust and a full exhaust system? 3) What kind of slip-on and full exhausts are the best and most efficient for a 1997 Kawasaki Ninja ZX-7r? 4) And finally how easy is it to install a slip-on exhaust? Is it all bolts? Or is there welding that is needed? Could i do it myself relatively simply? Or if i need to take it to a shop, how much would they charge to put on a slip-on exhuast? All replys would be greatly appreciated.