I am trying to put together a 3VZE engine for my son, I have never worked on these engines before, On the driver side of the block is the screw on oil filter location, the motor mount and then what looks like another oil filter screw on but I don't think that is what it is. Someone else took this engine apart and I am trying to put it back together. Any ideas for me?

 

3vz think had dual oil filter configurations one should be plugged of not used or had the plug on it and or was removed think its part number 90404-19013 oil filter union plug

http://www.yotatech.com/f116/3-0-dual-oil-filters-installed-215913/