Convertible top

The back seat of a 67-69 Dart convertible is the same as the Barracuda's back seat. Look for someone parting out either a Barracuda or a Dart convertible for that channel, but they might want you to buy the entire back seat to get it. If you do buy a back seat, just be sure it includes the channel you need. Here's a picture of the
channel on my project 68 Dart.
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There may be another option. Don't know if it would work, but maybe. A reproduction channel is available for a 65 Mustang convertible. If the boot fits in the channel, perhaps it could be made to work for your Barracuda. There are plenty of Mustang convertibles around, look for one at a show and ask the owner to show you what the channel looks like, before you order. Below are pictures of the Mustang part.
MOLDING, BOOT CHANNEL - #54676-1A - National Parts Depot
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