Right on! I'm headed down the same path. I've got an 84 4Runner with a bad 22R.
http://board.marlincrawler.com/index.php?topic=14334.0 I'm looking at a couple of 3RZ's at some junkyards here in CO. My main problem is getting the bellhousing from the Taco tranny. These places don't want to seperate them. I've found one place for $1200 everything but the bellhousing 60K miles, 2000 Tacoma.
Please document everything if you can that way I can just copy you