Difference between 02 and 03 silverado seats?

[67ChevyRedneck]

As the title states, it seems GM did something different with the 03+ seats compared to the 99-02's. Or did they? I sat in a leather silverado bucket today and I'm hooked. I have to swap my truck over. I found a guy selling the actual leather covers (not slips, but the actual take off the cloth skin and replace it with the leather skin) but he has them listed as 03-07. Anyone know if the seats actually got any real changes, or did they just get a different pattern sewed in them? Kinda like the difference between all of the 67-72 covers, the years are all different, but they all fit the seat.

I don't want to make a several hundred dollar boo boo. We also have a new UPULL just opened in my area, I'll be checking that out for complete seats soon!