If it was MY car and they told me that, I'd start by talking to an experienced Viper service tech at a CDJ dealer. They've seen everything in the lineup and could probably recommend a few that are reasonably similar.
You have to make some kind of adapter, but at least you'd have some hope starting with the right 0-5V harness plug and material of construction. A Dremel grinder, a couple of tubes of JB Weld, a bar of 3003 aluminum, a lathe and some o-rings ought to be enough to get you back in business in a couple of days.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.