your talkin about the rear end correct? if so then theres no particular order.. but if your trying to put a pinion and gears in without air tools you wont be able to get it right.. the amount of torque and force it takes to crush the cruch sleeve is a goooodd bit. I had to use an impact to do mine
i held the rear down and put a chisel through one of the holes for the driveshaft bolts(not the ones i'm using) and my friend took a 4-5 foot breaher bar and put it over the socket wrench, it worked, but it is difficult.
I used the spacer that is available from 50Resto. Instead of the crush sleeve, you have a spacer and shims that you add or take out to get the correct preload. 2 years on mine with no problems. I recommend it to everyone. Now put the 4 foot breaker bar down, and step away from the vehicle!
.....or just reuse the old one it if you are using FMS gears. Just tighten till there is a slight amount of drag on the pinion and you would have picked up the sleeve where it left off. I've done it twice before with good results.