See if this place still has those parts attached to the fender of one of their units. http://om.lindellauto.com/om/fvn/def...am+50&search=1
Seems like they would get left behind after removing the motor etc.
I have no idea who they are I just found them searching. I also do not know if it is affecting your motor as the emissions stuff was ripped out of mine when I bought it.
One more thing, if you need help to find a new or used one Mike Warme is in LA (I think) he is a member here try to contact him he might be able to help you find one. There are also a lot of good junkyards in the valley but you probably already know that