A few CJ7s were equipped with an optional factory bench seat that was bolt in. These seats were standard in the CJ10As. They pop up for sale from time to time. I have a couple of them and may be interested in selling one if you are interested or haven't found an alternative bench seat that would work for ya.
2 - 85 CJ8's, 85 CJ7, 84 CJ7, 84 CJ8, 2-84 CJ8 Postals, 3-82 CJ8s, 53 CJ3A, 02 Dodge Ram 2500 CTD HO 6 spd 4x4, 06 GC "Overland", 87 Grand Wagoneer
'05 Wrangler Rubicon Unlimited Sahara Edition, 0002 of 1000, 6spd, hard top, stock