I've been looking at this one on eBay, and it sounds pretty good to me but maybe I'm a sucker... http://cgi.ebay.com/ebaymotors/ws/eB...9456205&ssPage
Anyway, for $125 shipped I get the shifter, bushings, etc... and it sounds like it drops in, which is a bonus for me.
Thought maybe someone would have some insight!
By the way, I've seen the Miata shifter conversion writeup and feel confident I could do it, just not sure I want to mess with it if this is a quality piece for the extra $20 it would cost me over making the Miata shifter work (new bushings, shift ***, etc....).

 

That looks like a pretty good kit to me, but some times things on Ebay look better than they are. Personally, id go for it.