Finding a cruise control - The impossible task

[Srecko]

I'm new to Piston Heads, and relatively new to AM ownership. I've got a 2007 AM V8 manual transmission with 20k on the clock. I want to install cruise control. The dealership wants $1,400 to an install (Dimmitt in Tampa) and won't sell me the unit if they don't do the install. I contacted Scuderia to order it but they're unable to determine which one I need. I gave the last 6 digits of the VIN but they claim Aston cannot tell them which until fits my car. Aston needs the serial number off the original module. Since it had no cruise previously, there's no module to give the serial number for. The last 6 digits of my VIN are C03489. Any suggestions would be greatly appreciated.