Precision pretty makes all the windshield gaskets. Lots of people sell them but even steel rubber is precision. So shop price. Best price I have found is
Precision: part number WCRD690 for 67-9 barracuda (non conv) and 23 series dart.
These are just under 100.00 shipped, you just cant beat it! I just installed one in my 67 last night gasket fit like a glove