U need to use a renix flywheel the 2000 has different timing marks. And u need the tans module and wiring its worth it but ull need allot.
Anx the rear driveshaft will need shortened or find one the correct length.
Could do something like this http://www.quadratec.com/products/product_search.php?pn=72025.821X,72025.820X&cn=OR-FAB+Cherokee+XJ+Rear+Quarter+Armor&sv=&sa=1