Blue Seat Belts for front bench

Hi there,

I've got a '70 Plymouth Duster and need to replace the seatbelts. It has both the buckle and inserts for the driver and passenger, but for some reason, there are two extra buckles in between them (see pictures below). At the end of the buckles, they are sewn together. I was thinking of just cutting the extra ones off, but I don't want to just throw them away as someone may have use for them. Is this how it originally came? If not, I would like to have just the two lap belts.

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