1. Don't think so, no
2. Trans upgrade is for earlier Grands : 99-01, if I recall correctly, it'll be on google somewhere.
As said, you will need a new low/drl module. You dont have that at present.
Then a DRBIII scan tool, not just any scan tool. Most are DRBIIs
Change country code
Reset and REinitialize BCM
Sorry, running out of time, gotta go cook for mudders day.