Rather than worry about separating engine from transmission while still attached in the vehicle, pull the entire assembly out through the front and disassemble it outside the Jeep.
99' WJ, 2.5" Rusty's, Bilstein 5100's, JKS TrackBar, Moog SuperTrailBoss
"With enough fabbing, time & $, it's certainly possible.
That being said, it's like boinkin' your sister...just because you can, doesn't mean you should." - Double E