Believe it or not your are going to end up dropping it in tosee if there are clearance issues. And yes Iwould hate to give a good extra capacity oil pan but there maybe tradeoffs that have to be made to stuff that thing in a YJ. You may be able to keep if you weld and just modify to fit. Good luck.
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184