[78F350]

...if purchase a salvage package... immobilizer, ECU, ignition unit, door lock chamber, and keys... all matching - will this work?

Yes, with a few caveats:

• It must be from a similar model car. The model years break down to:
  1997 - 1999 Cable throttle.
  2000 - 2002 Electronic throttle.
  2003 - 2004 Electronic throttle with 'Variocam plus' 3 chain engines. More use of CAN bus.

• It will function, but will not be correctly programmed to the specific VIN and options of the car. May cause problems for future dealership type maintenance on the car.

• The minimum you need to get the car running is a matching DME, Central Locking Module (immobilizer box under the seat), and Transponder from the key fob. The other parts are optional.