For reference, I have a 05 Dak 4x4, 4.7L, so thats pretty much where I've concentrated my search for aftermarket parts. If you find something else that you think should be listed, let me know.
Misc 05 Dak Parts Lists
Dodgeparts.com
ultimateautoaccessories.com
Performance
ASP Underdrive Pulley: PN MTB578500, $239
Black Magic X-treme 180 electric fan: PN 180-Puller, $240
68mm Throttle Body: Fastman, $180 (** Note ** Be sure it's the updated TB as the IAC is different, otherwise you'll need the connector for the older style IAC. thanks to Bernd Ratsch)
HO Cams from the older 4.7L work well in 05's. (thanks to Bernd Ratsch)
K&N Drop in filter: PN 33-2175, $45
Mobile 1 Synthetic oil
OffRoading
Factory Steel Skid plate: Transfer case, PN 82209128 $49
Factory Steel Skid plate: Fuel Tank, PN 82209127 $79
Factory Tow Hooks: PN 82209129, $99
Westin Nerf bars: PN 25-2795, $340
Westin 1 piece Sportsman Brush guard: PN 40-1665, $400
Westin Bull Bar: PN 32-1665, $300 (** Note ** Cannot use factory tow hooks with the bull bar)
3" Body Lift: Performance Accessories, PN 60163, $250
2" leveling kit: Performance Accessories, PN 61062, $79
The Wincher (front bumper): Kennesaw mtn, ~$400
Miscellaneous
Powerslot Rotors: KRC Performance, $195
Control Arms: Upper & Lower, $550
Cat back exhaust: Gibson, PN 6538
Soft Tonneau cover: LeBra, $185
Interior
Gauge Pods: ProPod, $55
29 pc Dash Kit: Sherwood, $199-$359