That's pretty cool on the adjuster, probably works great. The OE wire/turnbuckle/spring things are cheesy.

Just throwing this out there for comparison. I used a set of '80s Jeep Scrambler seats in my Duster mounted on '68 S/S style brackets. 22lbs each!

Got the seats for free, the covers were around $150 off Ebay IIRC. If you squint they almost look like they belong in there.

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'71 Duster
'17 Ram 1500