Wrong Parts to Repair a Spool Mount?

I don't think that's going to work. Kinda like putting a round peg in a square hole, only yours is oval. Part# EM2369 or EM2325/2326 I think is what you want.

While in the Rockauto catalog, when you clicked on the drop down box for the motor mount, just below there is a line for motor mount insert. Click on it and you will see that energy suspension is selling their motor mounts. There is no sale price till you place it in the cart. Either way, I believe the above is what you're looking for, not what you've bought.