Anybody know where online to find detailed specs for these pickups, or what book I need? Things like bed length, engine specs, towing capacity, etc?

Hey man, I know this is a late response and I'm not sure if you found your info, but the best place I found all that was in the original owner's manual. If you can't find it there, you might try your local Toyota dealer. What year pickup do you have? I can give you the specs on 92s and 93s, since that's what I own or have owned....