Well I've had it 4 months & still loving it. Getting just over 14 mpg including towing.
It already has the 6637 filter on it & had the CPS replaced @ the dealer (not sure which color). I'll be on the look out for a diff cover.
1st thing after I got it had to rebuild the fuel bowl & rewire all the A/V stuff. Even got the original alarm with remote start working again.
I got a great deal on 4" SS MRBP turbo back exhaust, just need to find time to put it on.
Next on the list:
PHP Hydra chip
Big 6.0 tranny cooler
Newer headlights
Drive the **** out of it