What Curt said is about right. I bought my Keyless entry from Jeff Watson about a year and a half ago. At that time, he said there were like 5 left in the country, and they in fact were discontinued. The only way you probably can get one is from a wrecked car, or get someone to take it out of there car and sell it. They are a separate ECU that is installed either under the drivers seat, or under the center console. The factory alarm and door lock mechanism is on the right side of the glove box.
The keyless entry was made by Fujitsu Ten for the 96-97 years, I suppose you could call them and ask if they have any? 1-800-257-5413, or 310-327-9905, or 310-767-4252
They only listed systems were for the 96-97 fax back ID # 71431
or the RS3000 for 97 year fax back ID #71412
Stu Hagen