You should have 2 jacks, if you leave the exhaust in you must have one tranny jack because it is tight and you kinda bring it out and in on an angle, at least that's how I had to do it. Make sure you lock the 4 corners in with the brackets and then be able to loosen the front brackets so it will not interfere when you are putting it back in (brackets by the exhaust). Just so you know, I did this in my garage on the floor, I wish I had a real lift for this job.
Remove your distributor and the tranny dip stick first so you can lower it more without any damage. The bolt for the dip stick was also a bitch to get out and back in because you can't see it.
Top bolt on the transfer case was a bitch too, I used a 3" wrench and that worked great (lowered as much as I could). And the top bolts on the tranny from the top side of the engine with it lifted all the way up.
Another problem I had, the TC would not spin so I had to sand it down a little to get it to spin freely before I tightened the bolts to the flex plate, more wasted time...
This had taken me several days and nights so about 25 hours, that's just me, I didn't rush and swore a lot!!! I'm sure I can do it much quicker next time but it was PITA +3 for me. I had a lot of rust to deal with and my tranny would not break free very easy (bonded from all the salt). To shock the tranny free I used a 16" x 4" piece of steel and bolted it to the front of the bell housing, used a 6' skinny fence post that went through to the front and shocked it free with a piece of wood and a 10# sledge hammer, I will never buy a car or a truck that was owned by someone right in front of the shore.
It takes about 10 to 15 minutes just to fill the TC so hats off for the guy who did it in 3.5 hours. WOW!!!
Hope I can save someone some of the grief I went through...