I've finally sold my Audi and now have the 964 suited for a daily driver.

The only option I miss is keyless entry. Being that this is a daily driver I lock/unlock the doors at least 10 times a day.
Has anyone installed an aftermarket unit to work with porsche's OEM power locks setup? Do I need to purchase a whole new alarm system, etc? If so is there a trustworthy local installed that won't butcher up my wiring...