Attention: TDR Forum Junkies Are the APPS between the years interchangeable, i. e. "plug-and-play"? My early 03 truck has the APPS by the intake horn, but later 03's have it under the driver side battery, and then even later trucks have it by the accelerator pedal, AND depending on manual or automatic you can get variations of the above! 
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The reason I'm asking is that my APPS is taking up valuable space where I can cleanly mount a 2-micron fuel filter after the factory 10-micron filter ala RBattelle's setup.
:{ The reason I'm asking is that my APPS is taking up valuable space where I can cleanly mount a 2-micron fuel filter after the factory 10-micron filter ala RBattelle's setup.
