Adding rack/rail to a pick up with a top.
 

I picked up a dakota and a cap recently and was wondering how yall attach some sort of rails to the cap. I am willing to go the Thule/Yakima route if i have to but would like to save money with a DYI option. I have Yakima ski racks from my jeep but need some crossbars for the cap. Also, she is nekid without an S-B sticker, who's got em :)