[MOTORHEAD]

Thanks for all the input guys, guess I'll forget the V nose, but I may try some of the tricks Brock used on his trailer.
Silversmith: my '99 250 SD is 2 wheel drive with o.d. automatic. Whay is the "GV" od you were refering to?
Anybody using a tuner chip? Any mileage improvement with any of them? I notice they don't make mileage claims for them like they used to.