I have an '05 Lund with the "sport trak" system railings. I've been searching for attachments for the sport trak system such as cup holders, etc. but I've completely struck out. I've talked with my local Lund dealer, who didn't have them either, and told me to look on-line. I looked at Bass Pro, Cabela's, GM, etc, and I searched on-line and have come up empty. I've even looked just for the little clips that fit in the rail system...nothing. Anyone got any help?