My question is, are any of those the correct bracket for the crew cabs?
My stock seat is uncomfortable and more worn at less than 60,000 miles than the seats in my k5 with 190,000 miles. 2 possible problems with using the seats is width and seat belts. I'm almost certain that the center console won't fit between them. And the stock seats have the female end of the seat belts attached at the bottom.
I had the same exact Corbeau seats in my 68 Impala fastback! They are very comfortable, but also very hard to get in and out of. I currently have Corbeau Moab seats in my 88 S10 Blazer and like them, however the Corbeau mounting brackets needed to be cut down almost 2 inches so that my head did not go through the roof! The brackets for the 98-05 S10 truck should fit the CC.