I'm suspecting it will be the same physical roll-goods weatherstrip as 1965-1968 C-body non-station wagon cars? Steele Rubber online catalog, most probably? They should have some side profile and dimensions illustrations in the catalog, for verification of what you need.
Should not need any adhesive to hold it into the rain channel on the body, but some silicone sealer (NOT the typical "weatherstrip adhesive"!!!!!) so later removal is not very hard to do, if needed. Some sealer can be applied to the resulting "butt-joint" when done.
Enjoy!
CBODY67