Has anyone done or seen a 4WD retrofit done on a 4th Gen.? I'm just wondering if I can do it. I was wondering about the electronic 4WD selector. Would I have to change the ECU as well or do you guys think I could just power the stock selector through an aftermarket relay? I tried the search option but could find anything on it.....just a whole bunch of "what have you done lately" threads and "spotted" threads. Any help with this would be great. thanks in advance all.