Jeep Drivetrain

OK, my best guesses given the info you provided, and assuming both Jeeps are still stock.
1984 CJ-8: 258 AMC I-6, T-176 trans is possible but not likely, probably either a T-4 (4 spd) or T-5 (5 spd), Dana 300 t-case, Model 20 rear axle, Dana 30 front
1973 CJ-5: 304 AMC V-8, most likely a T-15 (3 spd) but possibly a T-18 (4spd), Dana 20 t-case, Dana 44 rear, Dana 30 front

"My other car is a BULLDOZER"

off-road.com has a page that tells all of the swb history. go to the 4x4 pages and then Jeep. It is under "hot off the press." Every possible part is there and if you click on them you can get more info such as gear ratios and other cool stuff.

Nick Hagen
1995 Wrangler
33" Mud Tires and a four banger