The install will not be much diff.
You will not need to deal with the immobilizer, [unless your installing a remote start] as it is controlled by the transponder in the key."idatalink" or any unit like it, we use the Fortin CAN-SL2, it will cut down on a lot of wiring.
The CAN-SL2 allows us to connect up...
Alarm Disarm
Alarm Rearm
Door Lock
Door Trigger
Door Unlock
Hood Pin Output
Rear Defrost
Trunk Pin Output
Trunk Release
Plus other things for remote start, one lead from the CAN-SL2 connects to the cars data-bus port, you will still need to connect powers, ground, siren and light flash. 
94
94LS
^^^ now in the process of being striped down and gutted for the rebuild.
Now cruising in my new winter car, 89 Chrysler Dynasty 
You get what you pay for.
Nothing is impossible, the impossible takes longer and costs more money.
