Cars with a consolette do use two seals. See attached exploded parts view.
The lower seal acts as a weather seal to the underbody. As noted by Bob, GM part no 3842926 is correct for '65-67 Skylarks with consolette, '64-66 Chevelles, and some '64-65 Olds F-85s. These seem to be readily available. Some sources indicate it may still be available from a GM dealer.
The upper seal clamps to the upper half of the consolette. The Buick part no is 1361008. Nothing turned up when searching by that number There are some aftermarket items available that look close to the original. Might be good to check fit of the new boot to the round shift lever. Some look like they are molded to fit a rectangular shaft.
CP1387S from www.thepartsplaceinc.com
Metro RP33Z from www.rockauto.com
SB652-3 from www.oldbuickparts.com
Last edited by TODD; 05-20-2018 at 06:19 AM.
Reason: Add attachment
What has been, can be again. (Bob Wills, 1942)