You stole my name!
MJ (Commanche) never came with front D44, but did have a rear D44 in the metric ton package. The short-box MJ's are cool, can be found with the 4.0L or the 2.5L, which has 4.10 axle gears.
Personal preference, wether you want fullsize (J10) or smaller (MJ). The full-time 4wd in the J10 is prone to viscous coupling failure in the transfer case.