Joe, the thread was for the boot on the clutch linkage, next to the bellhousing.
For the non console shifter boot, don't hold your breath.....the 65-67 GS used a round shifter handle so it's unique to those years.
There is a repo for the later Olds that looks similar, but is larger and is for a rectangular shifter handle. Avail from Fusick and the Parts Place for about $50
The 67 Chevelle repo fits well but doesn't have the correct look.....$20 for the boot, $20 for the retainer. The retainer is the same as our GS's.