“71 Dart” Recommendation for shoulder belt conversion for front buckets

Hello Mopar brothers and sisters, I have a 71 Dart with bucket seats (probably was a bench seat originally). I am looking for someone with experience who has upgrading front seatbelts. What works, and what doesn’t. I am looking to go to a lap/shoulder retractable system for bucket seats To replace the lap belt only system. Thanks for any information RonD

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