I went through probably 25 posts about transmission fill plugs and didn't see a single one that looked like mine, so I wanted to post some pictures before I start removing bolts.
1988 4Runner V6 5-speed and I want to drain and fill the transmission fluid with Redline MT-90 (doing the transfer case too.) I do have the factory service manual specifically for the VZNSeries and from what I can tell these look like the correct bolts...Like I said though, I saw a lot of posts where people were saying different things but nothing definitive. If nothing else, more pictures for people to look through can't hurt?

Extra credit if someone can tell me what that disconnected plug is in the last picture...not sure why it's disconnected? Its basically right on top of the transmission...if you follow the drain plug up it's visible in that picture as well.

 

seems as though the diagram indicates those are the plugs.