I ordered the top seal for the cap from them last week and sent them a message (haven't heard back yet) about the two pieces because I didn't see them on their website.
Disassembled the hardtop from my '79 to have the headliner replaced, replace the top seal, drill out and retap some rusted/busted bolts, and just give it an al around cleaning, etc.
The rear cross member (over the ambulance doors) has these two rubber seals (one on either side) that go in...