If you have to rebuild your 1/4 elliptic spring box, chances are you are going to need this piece. This box mounts inside of the rear bulkhead pieces, with the leaf spring sitting on the inside of the opening on and the lower spring plate mounts to the bottom of this piece. This spring box is sold individually, so if you're doing both sides, you will need two.
Here are some videos describing where these boxes are located, not for the faint of heart!
