is a 1992 Jeep the same as the 1990 Jeep?

[Ddalek]

i have a jeep xj now and my floors are completley rotted out, what i need to know is, does the 1990 Cherokee the same underbody setup as the 1992 Cherokee XJ, if it matters i have and am looking at a 4 door

 

[Seahorse]

Not the same. Two year difference, hence different technology.