To use any 04.5 and newer stock turbo you'd have to remove the electronic wg assembly and convert to the mechanical/pressure setup found on your motor.
Short version: you got nutin' to plug the electronic WG into on your truck.
if the waste gate isnt plugged in is it normally open or normally closed, i would assume closed? i use to my tst to limit my stock charger at 35, so it goes off of the MAP anyway. so really you wouldnt need to swtich housings if you didnt use the wastegate anyway, right?