Nah, Its just that the 5VZFE doesn't have a computer or wiring harness and I talked to ORS and they said there were many combinations of ECU's and harnesses. I think it would cost me to much in time and effort because of this.
The 3RZ will have plenty of power and I don't think I'm going to swap it because I think I will just rebuild the truck it comes in (98 4Runner).