Which 750 cylinder for a 1979 kz650?

Don't know too much about the smaller kz's but what year 750 cyl. will bolt on my 650 bottom end?

Thanks, Mike

1980 will for sure have the provisions for the 650 style cam chain rollers. I've heard that some 81's also do, but also know that some 81's have the hyvo cam chain and don't accommodate the 650 rollers.

ok, thanks. I saw a '82 on ebay for $25 and figured one day I can build a bigbore turbo 6 fifty.