Wow, what a great bike! Sounds like a really good price, too. Do you have any pictures of the bike with the air-cooled Ninja motor installed? The pictures on your CL ad only show the original 1552cc v-twin and its radiator. Oh, and which Ninja motor did you install? Being that they are all liquid-cooled, how hard was it to convert to air-cooled? I know (as I'm sure you do) that the MSRP on a 2007 Mean Streak SE was $11,299. What did Kawasaki do to yours to up the retail price to $16,000? Is the jet pack still under warranty? Do you have the receipt for the $5000 that you spent on it? Sorry for asking so many questions, it just that I'm really excited about the chance to get a $21,000 bike for only $13000.