I’ve used those pliers many times. I’ve upholstered a few of my classic cars with kits that companies make OEM Looking covers. No velour diamond tuck in my classic car if you know what that is. Ha ha.
On my 99 F150 seat bottom it didn’t use hog rings. Hard to explain but it used a plastic piece sewed on the fabric that had a slot in it. You would pull it tight and slide it on a metal tab of the seat frame. Easiest seat I’ve ever done.
These newer trucks have plastic rails, for lack of better description, sewn into the seat skins then plastic clips glued in the foam that they clip into so no hog rings with the newer trucks. Sounds kind of similar to what you found in your older truck.
I installed my lariat take out leathers myself and actually really enjoyed the process, but have to be careful otherwise you can rip the plastic clips out of the foam out of the seat.
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