AFAIK, there isn't much wiring work that needs to get done for this swap, just a little work to get the reverse lights to operate correctly. I don't think there's much to it. You don't even need an ECU from a manual-trans car.

I've never done the swap myself obviously, and so I don't claim to be an expert on it. Here's a thread detailing the swap, for those that are curious:

http://forums.toyotacressida.net/for...=35699&page=11