On a previous TJ I just swapped the base from a flip to non flip seat. It's an easy swap and they can be picked up on ebay or at DeadJeeps.com.
https://deadjeep.com/products/97-02...-base-riser-left?_pos=16&_sid=a64189ce1&_ss=r
https://deadjeep.com/products/97-02...-base-riser-left?_pos=16&_sid=a64189ce1&_ss=r