You could buy a Mopar 6.4 conversion/restomod harness and just run the engine as is-I believe it's about $1700. The Jeep 6.4 is a rear sump so you will need a mid sump pan if you want to keep the stock front suspension. If you are going with aftermarket front k member (that deletes torsion bars), you can use the jeep rear sump oil pan as long as the car doesn't sit super low.
Keep in mind the Mopar crate kit only works with 2013-up engines due to the crank reluctor. This can be changed on the older engines, but requires removal of the crank.
