Hi, Sam. You could consider posting what you want, see if a KNOWN Viper dealer/tuner/board sponsor/member has the item for sale...just a thought.
UPDATE: Just found your other thread, Sam...took the liberty to move requested item to this section for wider exposure:
Sam said: "For the record, I've been a VCA member for about two months(My paper work has not been processed yet to give me a VCA number!)and have driven the Viper Days event @ Putnam Park for the last two years. I want to purchase a Mopar 3.55 diff. for my 2001 Viper GTS, thus the question about Viper Performance Parts Inc. Thanks!"