Today I removed the crank pulley and alternator pulley to prepare for installation of the NST Pulley Kit. The Puley kit arrived today, but unfortunately the NST kit comes with no documentation. However, the Stillen kit does and it's available here
http://www.stillen.com/product_files/400338~inst.pdf This will at least assist you with the removal of the crank pulley.
Find a helper if you can, but I did it by myself and it can be done that way. I used 3/4" drive breaker bar to remove the torque from the crank pulley and an 18" pry bar to keep the flex plate from turning at the starter opening. The larger the tool, the greater leverage and the easier the job.
There is a large amount of tension on the belt tensioner. I used a 3/8" breaker bar and then found a deep well socket that fit over the handle and attached enough extensions on the socket so it extended the handle to give more leverage. Starting with the handle facing 7 o'clock position I pushed the handle to the 5 o'clock position and added another extension so that the bottom of the last extention rests on the ground keeping the tensioner unloaded.
I'm not sure what puller they use, as I purchased the smallest one I could fing and I did not have room to use it unless I removed the fans. I don't know if it is because my Z has less than 200 miles on it, but I used a medium sized pry bar and pushed behind the crank pulley a couple times and was able to wiggle it off of the crank.
Removal of the alternator requires removing the two bolts holding the mounting bracket and alernator on the bottom of the alternator. Disconnect the electrical connctors and then loosen the bolt at the top of the alternator. Pull the bolt out as far as you can. The alternator is fit very tightly. You may have to pull the fan assy. up slightly to pull the upper mounting bolt out. Otherwise rocking the alternator up and down while pulling will release it from the block and you can lower it and work it out in front of the sway bar. Use a rag to protect the grooves on the pulley and a suitable set of plier (channel locks, vice grips etc...) Using an impact wrench, remove the pulley from the alternator. Reverse steps to install.
Sorry no pics, but I had my hands full just doing the work. I may have help with the install tomorrow and document better with pics.