as long as both had the same engine then yes.
Will a 304 engine fit in a 1998 TJ jeep wrangler?
absolutely not. not without some kind of mods and all of the wiring harnesses and computers. also the tranny would have to go with the motor as the ECU must connect to both the tranny and engine to function properly.
yes
yes is does
With enough time and money any engine would fit.
No.
No.
No.
No.
NO
Jeep Wrangler YJ 2.5 engine, trans is a AX5
Yes, it will fit just fine.