...just look for a set of front seats that match your leather color and type, and whatever memory/heat options you have. The rear sport seats have no extra bolstering, they're just trimmed slightly differently to match the pattern of the fronts. There was a special "two-seater" rear setup for the 4.2, which is better bolstered, but the chances of finding one to match is pretty slim. If you're going to do a full interior swap, might as well go whole-hog and opt for a Euro Recaro interior (as long as you don't care about adjustable lumbar or seat heaters). I find the OEM sport seats to be fairly well-bolstered and quite comfortable. Haven't done a long trip with 'em yet, but I don't foresee any comfort issues (~6 ft., ~200 lbs.).