LOL, the lumbar and kidney supports ARE electric powered, therefore the seats are powered seats. They just don't tilt and slide under power. There never was a MA70 chassis in the US with a fully non-power seat.
And for the record, the stripper model seats with just lumbar and kidney electric powered controls is quite a bit lighter then the full power seat. My 86.5 had the base model seats and they were pretty light and easy to manage. I nearly gave myself a hernia lifting my leather full power 92 seats out for the first time.