I have a new "Swivel-R-Us" seat swivel adapter for sale. It can be used for either the driver or passenger side seat because the off-set is only to the back of the adapter. Just remove your existing seat and bolt this right onto the sliding mechanism. It will raise the seat 3"....... $200
https://portland.craigslist.org/grg/pts/d/underwood-swivel-seat-adapter-for/7838021263.html