Let me know if you want a copy my 93/94 pin out spread sheet. I put it together to help me figure the interface when I did my swap. A number of people on this board now have a copy of it and I would like to see it get put to good use. Pretty much everything happens through the IH1 and IH2 connectors and if someone could source just the plugs and pins then it could be possible to make a harness that plugs in between the gm harness and Toyota body harness. I had to sacrifice my 1FZ harness to make it work.