I am needing an engine for a 99 zx6 ASAP. I bought the bike 2 months ago. It had not been started in almost 2 yrs. I rode it for about a week, then the troubles began. While it was running, it was pretty fast. I've had a R6 in the past, & I was impressed with the quickness of a 13 year old bike. Any way now it won't start. A mechanic friend of mine looked at it & said it's going to take at least rebuilding the top end. I figure if I'm going to do that I might as well replace the whole engine. Any one that has a used engine for sale please text me @ 205-300-4019 or email @ [email protected]. I'm not opposed to putting a bigger engine in it as long as it will mount right. I hope to hear from you soon.