Yes ... Sorry ... Both cars use unique wiring.

The identifier for the RS is a 2M5O prefix on the wiring part number.
There are a few relocated items on RS, such as the Alarm (GT Alarms) module, using extended standard leads from sensors ; ))))) )

ST170 uses prefix of 2M5V on unique parts. (Which is most of it)
You need the floor wiring (14014) to connect up Premium Sub sound system for instance ; ))))