Okay, glad you took it in the spirit intended.

Front to back:
Radiator/fans + shroud/hoses - probably electric and computer controlled.
Transmission cooler and brackets - parts and fab work to fit
drive belt set-up - Stock has A/C and a power steering pump. It may have a fan that probably won't fit. - Mods to remove or make this stuff work with a single belt.
engine mounts and trans mount - There may be bolt-in solutions.
Exhaust system - all must be researched and probably some custom work done.
Cutting current crossmember and/or car for clearance - fab work.
Oil pan and filter to work in the chassis - There may be bolt-in solutions.
Driveshaft - custom
Shifter - aftermarket
Fuel system - custom or fabbed


Now the computer stuff:
PCM
harness
additional wiring to connect to car - labor and some parts (ignition switch, gauges, MIL light, fuel pump wiring)
Junkyard motor may be good, but plan on a few sensors for a change of combo, damage or from sitting.
Plan on at least 40-80 hours minimum to get the thing so you are willing to run a half tank of gas through it without a cellphone and a bud with a truck and trailer. That's WORKING on it, either a smart pro ($) or the time you spend after many more hours learning this stuff.

Car stuff:
If any of the following are
1. not in very good condition
2. will not handle the new abouse
3. will be updated along with the engine/trans
they need to be addressed too.
Brakes
Suspension
Steering
Drive axle
remaining wiring
Body/Paint
Wheels/Tires
Interior
Glass
Trim
HVAC

Now, put a price on each thing, then add 50% for the little stuff. The hardware, the fluids, the beer for friends, the long distance calls, the shipping and handling, the difference between the price of the wrong part and the right one, all the stuff that drains that pocket.

I helped a friend with a "simple" hemi jeep swap. After it was "in", it was another 3 months until they came by the house for the show-off run. I have not done one myself, but will help that same friend with his Challenger swap. That one was bought half apart and half installed. We figure at least 60-80 hours figuring out the wiring, and we are not slouches. Add-on remote door and trunk latch kit, add-on computer, add-on fans, none of it connected properly, only some of it even partly routed, and only half the wiring diagrams for the kits.

It's better to research it deeply before you spend and try to make stuff work together.