Jeep high back buckets or A100 van seats?

Some Jeep (or AMC anything in this era) seats can be hard to adapt since they don't all have a flat square or rectangular mounting surface underneath built into the seat frame. When AMC owned, or was affiliated with Renault, they used the crazy Renault seat track/mounting system across the whole vehicle line. With welder its not a problem but it can be extra effort.