Sir, your engine is not connected to your car.
This from a 1991 W126 420SEL. I have never in 20 years in the shop seen mounts this bad, ignored for this long. The engine was a good 2" out of place. It broke the exhaust mount bracket that’s cast into the back of the transmission, hit the fan on the shroud, torqued the exhaust hard enough to loosen the right exhaust manifold, damaged the shift linkage, bound the throttle, and broke the bracket for the engine damper. Not to mention that the idle was stuck at 1500, so it banged hard into gear, jumping the engine. Unreal. Got the mounts and idle fixed, now we can talk about smog.