I am brand new to this site (loving it by the way!!!!) and i have a 99 3500 5speed, 275 HP inj, and was wondering if i could run into trouble running heavier fuel in it I. E. #4 diesel, or DFM. I have a friend in maine who ran it in a 94 said it worked great, lots of power, super mileage, and lots of smoke ( a huge plus) just wondering if anyone had tried it with a VP44 pump. Thanks Tony