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2013 ZL1.

I tried:

- Summit Racing;
- Autozone;
- Rock Auto;
- 1A Auto;
- newgmparts.com.

I searched for:

front left AC Delco ADO-580-428 GM 22952188 replaces 22902678
front right AC Delco ADO-580-429 GM 22952189 replaces 22902679
rear both AC Delco ADO-580-445 GM 19300041 replaces 20942614

I get the exact same answer everywhere: "GM no longer offers those."

Are there revised GM or AC Delco part numbers I could search for?

Who has them in stock?

As far as I've researched, aftermarket only offers conventional shocks, and I don't want those because I want to keep a major feature of my vehicle, which is the magnetorheological suspension.

The computer measures the suspension 1000 per every inch of the road and adjusts the suspension accordingly, and if I put in non-magnetorheological shocks, the system will no longer work correctly and I'm probably looking at a firmware reflash, which will open a whole new can of worms. I don't want to go down that road unless I absolutely have to.

Finally, in the country where I live we are not allowed to modify our vehicles, and if the inspector sees aftermarket shocks, I'm toast: I can park the car forever because it won't be street legal.

As much as I hate to write it, this is one of those "OH HAI! PLZ HLP!" posts.