I JUST BOUGHT A KAWASAKI NINJA 2007 ZX-6R. I HAVE NO OWNERS MANUAL YET AND I KNOW NOTHING ABOUT THIS BIKE. I AM VERY INTERESTED IN WHAT MAKES THIS BIKE DIFFERENT FROM THE OTHER 2007 KAWA NINJA´S. I WENT TO BERT´S BIKE SHOP AND ONE 2007 USED NINJA SOLD FOR $11,000 AND LOOKED JUST LIKE ANOTHER 2007 NINJA WHICH SOLD FOR $8,000. NO ONE AT THE DEALER COULD TELL ME WHY ONE BIKE COST MORE THAT THE OTHER. THE SAME WITH THE NEW BIKES - A 2011 NINJA COULD SELL FOR $7,999 AND ANOTHER 2011 NINJA WOULD SELL FOR $15,000. I KNOW ONE BIKE IS BETTER THAN THE OTHER, BUT NO SALEMAN COULD TELL ME WHAT WAS DIFFERENT. I ONCE WAS A MECHANIC AND I UNDERSTAND, CAMS, FUEL INJECTION, BETTER SHOCKS, BETTER FRAME AND ALL THAT STUFF, SO CAN SOME ONE TELL ME WHAT IS THE DIFFERENCE. SECOND QUESTION, I JUST BOUGHT A KAWA NINJA 2007 ZX-6R WHICH NINJA DO I HAVE. IS IT THE $8,000 DOLLAR NINJA OR IS IT THE $15,000 DOLLAR NINJA. LIST THE MODELS FOR ME IN ORDER OF PRICE AND VALUE FOR ALL 2007 AND 2011 KAWA NINJA´S PLEASE SO I CAN UNDERSTAND. I SPENT ALL MY MONEY ON THE BIKE SO I NEED A 2007 OWNERS MANUAL FOR FREE CAN SOMEONE HELP ME WITH THAT