Here is good info if anyone is interested in these:
The following is copied off a forum message on the web.
Here’s some part numbers from the Pontiac Parts book: 67 RH Frt 9789448 Dampener and bracket 67 LH Frt 9789449 Dampener and bracket 67 RH Rr 3909928 Dampener and bracket 67 LH Rr 3909927 Dampener and bracket
68 RH Frt 9792469 Dampener and bracket 68 LH Frt 9792470 Dampener and bracket 68 RH Rr 9792319 Dampener and bracket 68 LH Rr 9792320 Dampener and bracket
69 RH Frt 9797614 Dampener and bracket 69 LH Frt 9797615 Dampener and bracket 69 RH Rr 9796673 Dampener and bracket 69 LH Rr 3962787 Dampener and bracket
