For safety - original bench or switch to bucket?

1967 Dodge Dart 270. Doing a total restoration with safety upgrades. We're a LOOONG way off from reinstalling the seats, but I'm trying to plan ahead.

Safety is, first and foremost, my concern with any upgrades. I'd like to make this car my daily driver if it's safe enough. Is the original front bench seat sufficiently safe, or should I switch to bucket seats?

I'm a Catholic priest and, in a previous assignment, I took Holy Communion to a guy's house once a week. He was in his mid-40s (this was about 10 years ago). He was permanently crippled from the neck down because of a fender-bender. Someone tagged the rear end of his car at ~10mph. His car had a front bench seat. It may have been a freak occurrence, but the impact at that speed was sufficient to snap his neck.

If it is safer to switch to front bucket seats with headrests - and I suspect it is - I want to do that. I wanted your input before making that a part of the plan.