I' am trying this today on my 2020 with power seats and dual battery's, how did you thread the wire up through the center hole of the swivelDid the driver side today and it went much smoother than the passenger side. I have the lowered parking brake so there was no interference from that. The bolt holes lined up on the swivel and the install was relatively painless. Took out the factory bracing over the batteries, but I figure the lower plate of the swivel should do an even better job of keeping the batteries in place.
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Just need to figure out a little ziptie trick or a slider to elevate the electric motor for both the passenger and driver side.
passneger side whent in prett easy , 2 1/2 hours with a little help from a hydrulic bottle jack to get the last hole lined up.