I don't have any pics online, but when I get a chance I can post some.
The front seats are a breeze. The rear is not hard, but does require a little more work. As Daryl said, the front seats are pretty easy. The fronts of both seat brackets match up to the factory holes. The passenger side needs a spacer. I used 1 x 2 square tube as a spacer.
The easiest way to do the rear brackets is to cut the "feet" off the bottom of the bracket. Use a 2.5" long piece of flat bar to make a new foot. Drill a hole in the center of one end of the flat bar and bolt it loosely to the floor. Position the seat over it and bolt down the front. Position the flat bar under the rear leg of the bracket and tack it together. Unbolt and remove from car and finish welding the new foot to the leg of the bracket. Now you have a direct fit bolt in 4th gen seat that fit a first gen.
The rear seats require a little more work. The seat bottoms bolt to an "A" shaped bracket on the floor of the 4th gen. You'll also have to modify the seat bottom framework a little by trimming the foam on one rear corner to clear the torque box in the 4th gen. The 4th gen seat back requires 2 brackets for each side. One for the hinge to bolt to and 1 for the upper seat latch. Easy to do.
I have a few pictures here at the office if you're interested.
