It may be beneficial to you to do some other items while you're down there.
Things like the Clutch Pivot Ball and Throw-Out Bearing should be replaced and depending on the condition of the transmission you get you may need to replace the clutch fork (if it even comes with one) then to accompany that the rubber boot for the clutch fork. (Again all this depends on the condition the originals are in) Also for the swap you will need a manual pilot bushing. (Good luck getting the automatic pilot bushing out)
I have a brand new Throw-Out Bearing and Pilot Bushing for sale if you're interested.
Then lastly, while your transmission is out it may be a good time to do your rear main seal.
I don't know if you've read this already but here is he parts list from the Z1 article:
http://www.twinturbo.net/net/viewmsg.as ... _id=746049
I just barely got done with my 5spd swap, let me know if you have any questions.