I saw the pics of the black GP interior a while ago, but I've been looking into getting leather buckets up front on my SE. See a bench in front gets loving in the front the bench in back gets my trash and empty pop cans on it... Thing I'm thinking of is finding four nice leather buckets dumping them in the four seating positions, then build a full console from up under the stereo in the dash all the way to the bottom of the rear pass-through, plenty of room for a couple of small subs up front, some amps, a little neon, maybe a cup holder even.
Also, if you like the looks of the buckets, but still want a full rear, just ( I use the term losely) take your old bench seat, cut out a wedge from the middle, take the upholstery off the insides of the two rear buckets, stick in the wedge, and reupholster from each side seam of the buckets across the extra padding. Might look something like the backseat in a newish (99 i think) 2-door GP. Then just leave the pulldown armrest intact to cover the poor stiching that I know you couldn't get quite right!