batman...
I had this unit installed in my 2001 Tundra about 4 months ago. With the "no slip" version you DO NOT use the thrust washers and spider gears...they come out and do not go back in. Now, on the "Lock Rite" you do reuse the washers. I took my third member out myself (took about 1 hour) and carried it to a local shop and they installed the no slip unit. It took them exactly one hour to install it. I wanted to do it myself but I did not have a vise and air wrench at the time.
I read everything I could about this install and this is a good review that helped me...
http://www.sporttruck.com/howto/76898/
Just make sure you "mark" everything and you will be alright. The ring gear does have to come off the carrier because the pinion shaft will not clear the ring gear. The hardest part seems to be (on some) getting the roll pin out of the pinion shaft.
Also, if you do it yourself you can lay the ring gear out in the sun and put the carrier in the refrigerator before you bolt them back together. Some people say it makes it easier to get back together, but you can do it without doing this.
I really like this unit. I got mine for $200.00 (new) off
ebay and paid $120.00 for the install. I would rather have an ARB but could not afford 8 to 9 hundred dollars PLUS the complete "setup" of the gears and bearings.
I still get an occasional "pop" but not much and you get use to the extra "back lash" built into the unit. It DOES work.
Hope this helps.