I just went through this on my non ZHP sedan. They gave me precious little for the car which had plenty of upgrades. On a positive side, I kept the car and have made about $1000 on the interior parts, wheels and tires, headlights, taillights and rear diff (engine and trans still to sell).
On a ZHP, assuming they aren’t damaged, the engine would fetch $1500 and the trans at least $1000. Add the anthracite headliner and pillars, trim, etc and you could easily make $3500 parting it out.