Hey do what waldig did. Im not 100% sure what he did but he said
"Mega ***** but did not stop me. Short of finding a better seat, I cut out the rear posts flush with the floor and bolted thru. Assed a brace and bolts from beneath, gained about 1 inch total but it was a gain. Pulling the seat is a real lift, put towels down to prevent scratches to the door jamb. A friend could assist a bunch, unplug the connectors first!!!!!!!!!!"