05 cr in my f250 what ya think, help
 

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Rig
03 f250 black fx4 black 18" rockstars (I wish I never got them now that everyone has them)
2 10's 350 watts to 4-6x8's / touch screen
35's 10.50 Nitto mt trail grappler
6" 5100's
procomp leafs
warn manual hub
conversion 05 5.9 cummins / stock turbo ( tapped all I can do now)
intake/custom
4" mbrp
smarty so6 pod
going back to 3.73's
What can I expect for mileage and hp/ft lbs? This is my daily driver and would like to keep this truck for a long time what are safe options to look into and a word of advice , my first diesel. Thx