Could be either 3.07 to 1 or 3.73 to 1 Both were an option.
The sticker on the drivers door jamb should have it listed.
No.
Chain
no
no they won't fit,diferent bolt patern
Dane 35 or Dana 44
If its stock it should have a Dana 30 up front and a Dana 35 in the rear and most likely the gear ratio is 3.07 i have the same vehicle and that's what i found on mine which was completely stock when i bought it Nic
Dana 30 front (181fbi) Dana 35 or Dana 44 rear (194rbi, or 216 rbi)
Dana 30 front, Dana 35 back, of if so equipped it may have dana 44 on the rear.
Best thing to do is use the all models safe coolant, it covers all the bases
The 2002 Jeep Wrangler has 8 valves.
No. The Dana 44 rear differential was an upgrade option, and came as part of a package including a limited slip differential. In my 2002 Wrangler Sahara I believe Jeep referred to it as either the Canyon Option or maybe the Off-Road Option.