If you still want to do the motor swap, here are the things you will need
Motor mounts (Dodge has them for about 90 a piece. Worth buying new)
Headlight to dash wiring harness(yes the whole thing from an 03 or 04)
Engine harness from the same vehicle as the headlight to dash harness(03 or 04)
Power Steering pump(at least the pulley)
High pressure hose, and sensor.
throttle cable(yes, really) from an 03 or 04 with a HEMI AND the throttle control module.
Driver Side wheel hub with tone ring and ABS sensor(for ABS and Cruise Control)
Computer for a 5.7 and get it programmed for your vehicle. Oh and remove SCIM.
Post cat O2 Sensors
I've done it. It's a pain. But I only rated it about 20 curse words.