[TWOOD]

Yeah, I thought of Sof-seal, too. It was the first place I looked. I also checked Steele Rubber products. I did not find exactly what I needed for the trunk to seal tighter (actually, for the trunk to seal AT ALL).
I never was able to get anyone to respond and actually provide a part number for a Sof-seal product on this forum, although numerous people said to "just go to Sof-seal".
So,....relucantly, I tried J.C. Whitney. The part arrived yesterday and appears to be just what I needed. It has a larger bulb and is more pliable.
I'll post again after I install it.
For what it's worth to anyone else trying to get a better seal on their trunk deck.