If all you are doing is resealing the sleeves then it is not a problem.
The cylinder sleeves must remain in the same location and orientation. This is the first rule. Very important to reduce the amount of work/measuring needed.
Just mark the sleeves so they stay correct or do them one at a time. After that you can pull them out, clean the sealing surface, and replace the o-rings. I also add a little Hylomar to the o-rings for added insurance. Then put them back in the same location and orientation. Very easy to do and pretty hard to mess up. Don't stress too much about them. They are much easier then the northstar sleeves.
The sleeves are much easier to do then it is to get to them.
If the sleeves are already out of the engine then there is a process to finding the correct order and re-installing them. Its not fun if they were not marked with cylinder # and orientation but it can be done. I can scan some pages from the factory service manual if you need to go this route.
[This message has been edited by Fieroseverywhere (edited 10-14-2014).]