asking $350 this is to be used with an external mount pump, could be modified to be used with the factory bucket though, this is a custom made fuel cell by DLJ racing (local place here in Wichita) made specifically for the 99-06 trucks. it fits between the two factory cross-members in the rear where the spare tire mounts. has -8 and a -10 fittings on the feed, and there is another -8 and -10 fitting on the top to be used for a return and a vent. 19 gal capacity also has a 0-90ohm fuel sending unit. here are some pics