I was just gonna point them to that post haha. If i read the post correctly, he had his bench cut and reupholstered, which is probably the way to go, considering you'll probably want them to click into place properly as to seal off the cargo area. And you won't have to worry about matching up the seat brackets underneath with a different type of seat. Good luck!http://www.custommagnums.com/forums/interior-styling/54359-rear-bucket-seats.html
here is the best example i could think of for bucket seats.
cost will vary since it will be 100% custom.