Stewart, welcome to the VTCOA. Your truck is very special. The guy that had it before you had almost $150k in just mods. First of all, that cam isn't stock (I'm sure you noticed how it really hits a lick). That was a special grind developed by Mopar with the express purpose of getting MAXIMUM power out of the Gen 16 heads... That's right, not gen 3 or 4, gen 16. The heads on your truck are amazing works of art. Special tooling had to me made out of adamantium just to make the precision cuts specified on those breathing works of art. And that just scratches the surface! Your rotating assembly is 22 POUNDS lighter than a stock trucks!! That's an incredible weight savings. That is why it revs so quick. There were a TON of engine mods I am forgetting. I'm sure you also noticed that if you "throttle down" at any speed under 85mph, it completely breaks the tires loose. That's due in part to the special 7 speed automatic that not only keeps the engine in the heart of the power band, it uses 88% less horsepower than any other automatic, ever. Also, just so you know, the 25MPG+ that you are getting, isn't normal. MDS was actually developed on your truck, complete with magnetic mileage boosters on the wheels. But none of those peices were ever affordable for the rest of the viper truck community (Dom may have them on his race truck, but I'm not sure). Anyways, hope you enjoy your time here and if you have any questions, please don't hesitate to ask!