If the Jeep originally had a 2.5L, then the 2.8L V6 will bolt up to the Jeep AX5 tranny with the stock 2.5L bellhousing. You'll have to use the 2.8L flywheel. If the Jeep originally had a 4.0 in it and still has the AX15 tranny, then you'll have to use a 96-00 Dodge Dakota 2.5L bellhousing and a Camaro flywheel. Probably not worth all of this effort.

Greg