Hahaha....I was a Kool smoker and it took me a while and I asked the same question for a Kool-like juice.

You ain't alone!!
I found a few that were so-so, started with Dura-true menthol...meh, then mixed it with other menthols and got by for a while. Then I found some other flavors that I liked and I was surprised that they were good to switch it up with. They are not tobacco flavored, like NJoy Artists Paramour for example, and even Mount baker extreme ice. Extreme Ice is more of a spearmint or wintergreen (which is wayyy not like Kool or Newport), but it still filled a gap for me. Now I found NET from Ether vapes. Check out vash's thread here:
http://www.e-cigarette-forum.com/forum/e-cigarette-suppliers-forum/558085-vashs-grand-opening-welcome-ethervapes-general-site-info-chit-chat-thread.html
He has some really good NET which ay be a start for you! I'm vaping the Bali Nights in menthol now. I would go with an extra flavor shot and classic throat hit if you try it! I would also go with a higher (1.8 or 2.4) nic level untill you are settled in to non smoking.
Hope that helps you a little