Vacuum Harness

I need to replace my vacuum harness for my 97 Grand Prix non supercharged. All I can find on the market is for the GTPs. The vacuum connectors for my vapor canister purge valve are deteriorating and causing a leak. Is there a part number for a vacuum harness for the N/As out there? Any suggestions if there are any alternatives? Thanks.

Is this on the Buick 231 V6? If so, there may be similar harnesses on other corporate vehicles with that same powertrain.