For the 208's:
They are the 'tall' adaptors from '81 to '84 and sit on a 'flat' crossmember.
The 'short' adaptors from '85 to '91 sit on the 'double hump' crossmembers.
<font color=blue>Daddy told me while learning to pee......"if you shake it more than twice, then you are playing with it!!!"</font color=blue>