Truck information help

My cousin has a truck that her soon to be ex husband purchased a few years ago. She wants to sell it and asked me what I thought it was worth. The trim package on the truck is different then I have seen and I cant find any information or value on the truck. Anyone that can tell me anything about the truck would be greatly appreciated or what any one thinks the value might be so I can pass the information on to her. I very limited knowledge of fords so I am looking for information, I am not at this time advertising this truck for sale. it is a good looking truck, I just know nothing about it. thanks in advance.

-2008 ford f250 6.4 psd
-modded/lifted with a procomp lift (I believe it is 6") per factory requirements but DC concepts (sticker on the b pillar), it has custom heated 2 tone leather seats with a bull embroidered in the headrest and the same bull is on the lower front of the outside of the door.
-I believe it has 37x12.5x20 tires (what sticker says) on black fuel rims
-line x sprayed in bedliner
-sunroof
-hs black maxx tuner.

not sure what that bull is, definitely not a ford package. Maybe contact DC concepts? Looks like the lift and seat upholstery is not factory. Appears to have started life as an FX4. Hard to put a value without knowing the miles.

sootie, thanks for the start (didn't know what an FX4 entailed). I tried briefly to search for dc concepts and haven't come up with much info yet, but I plan to dig a bit deeper.

truck has 90k miles on it.