First off, I've searched and read all stickied threads. 
  
This is a pretty unique build that I'm getting into.  I'm looking to swap an RB20 into a Z31 (nothing unique there), but I'm looking to do so with as little of the original chassis wiring as possible.  This is not going to be a street legal car.  It is going to be a purpose built race car for road racing.  Ideally, I would like to have the ECU only connected to the engine and transmission sensors/plugs/injectors/switches.  The only exception, of course, would be the ignition switch.  I need to know if this is even possible.  I'm new to Nissans, so bear with me.  I will not be using the stock gauge cluster or anything else like that.  I basically only want the ECU to run the engine.  Is that possible?