Found it. Its the black thing mounted to the back of the filter assembly. I'm replacing it with the airdog raptor 150 and a cat 2 micron filter assembly. Any one have a good technical write up on the raptor install on this truck?

Yep found it its on the back of the filter.

what are your plans for the truck and how much is the filter setup gonna run ya?

The filter setup I already have, I got it for free basically spare parts I had lying around for my boat. Not looking to really do anything too crazy with the truck. Mostly pull my boat and a horse trailer. Just added a bully dog gt programmer with gauges. My fuel pressure isnt too good so I am adding the raptor pump and big line kit (free with the pump). Then deep transmission pan and remote filter followed by high capacity rear and front diff cover. I'm going to replace the tc and rebuild the tranny when it fails. Probably add a coolant filter at some point. Its got 98000 miles on it now and I just want it to run forever.

since urs was on the back of the fuel filter canaster the install of that raptor is soooo easy. the instructions it comes with are very good too. just make sure to get the blue clip off the fuel line outlet on the tank or the quick connect for the raptor will not go on correctly. i just put a raptor on mine so hollar at me if u need any help

Fass also makes out standing lift pumps aswell, just my two cents

not true
 

i have a 04.5 and it had the one behind the filter. the dealer put the in tank one in when the other failed :argh:

i have a 04 5.9 and thinking of upgrading my lift pump,havnt looked to see where mine is mounted yet.
do they just maintain fuel pressure to the inj pump

It is behind your fuel filter on the driver side. You can get a new one jest like it at www.genosgarage.com for less than half than a after market one.