I run the 275 injectors and a VA and a prctical solutions boost module on a'99 3500 5 speed with 4. 10's and tow 14,000lbs. No mercy and no clutch clipping. The power is no good if you can't use it.
A friend of mine has a '98. 5 quadcab 3500 5 speed and 3. 55 gears. He has a PE EZ box and 275 hp injectors and no slipping yet.
later
Don
------------------
Ol' Blue "First of the first gens: 1989 D 250 Ice blue met. 5 spd 3. 54, 155,000, Banks stage III powerpack, 3. 5" straight exhaust, pump adjustments, "'Ol Blue Special" injectors.
1999 3500 4x4 Chassis cab Emerald green ISB 5 spd 4. 10 K&N Filter straight exhaust 9 ft flatbed WARN fenderflares,Let, 275hp injectors installed, boost and pyro gages, VA plug'n power and Practical Solutions boost module. Jacobs E brake. Getting ready to install Banks Power Pack TLC!!
May buy another one in 2009!!