Looking for bed extender brackets

I have an 04 that has the utilitrack system. Just picked up a bed extender for $40 but did not come with the brackets. Read somewhere the Amp sold them, but can't find them now. About the only ones I can find are for Frontiers. Not sure if the system is the same size or will work. If anyone has any for sale, send me message or point me in the right direction. Thanks.