Convertibles with 3 point seat belt conversion?

DA69RT GT said

Heres a pic and an old link with some discussion:
67 Dart shoulder harness anchor?
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Not a lot of fun for the back passengers...
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Not to mention UGLY!
Since you are doing a resto-mod anyway, you might consider doing a short roll bar from one side to the other just above the seat back height. Strictly for upper belt mount .