Wow.
  I hope to go to a junkyard next Saturday that has a Pacer or two. I 
  remember taking the X off of a Pacer X, but it is different than a Sportabout 
  X   X
  If I go I will look for a lense for you. 
  There are other junkyards with Pacers, but I won't be able to go to for 
  awhile.
  I will try to ask a fellow AMCer if he can find one in his travels.
  I will see what I can 
  do                             
  Luke