what do yall think should be next on the list airdog II or adjustable timing gear? also any personal info about either one would be awesome!

 

I would go with an airdog 2 cause your truck needs all the fuel you can get. If you lift pump goes out your injection pump goes out. My buddy has one and he loves it. He was getting 20 mpg and now he is getting 21 and the way fuel prices are every little bit helps.