Strange noise(s) getting worse

[weird beard]

strange noise, cant locate

1982 300sd, 320 000 km

For my sanity, safety and financial well being, I NEED TO FIND THIS NOISE. It is getting louder and happening more often. Totally random if will or not make it.

Loud intermittent squealing noise and occasional grinding from the front of the car. Either center or off to the right of center. Squealing sounds like belt squeal but is not from the engine, does not go away or change when put in neutral. No change under different engine loads or rpm. No noises when stationary at any engine rpm. Must be moving. More likely to happen at higher speeds. This week started getting really bad and went from squealing to loud tinny rattle and suddenly stopped, came back a few more times and stopped again. On top of that, grinding noise turning corners at speed, sounds like tires scrubbing, worse turning right. No noise turning from wheel stop to stop. Is it related, I have no idea. car pulls to the right. Was aligned six months ago. Have not hit anything

New engine mounts, new wheel bearings, new tires, new tie rod ends, new track rod bushings, new brakes front and back, new belts and hoses.

Checked complete front end, found nothing, absolutely no play in anything or loose components, all mounts, bushings, lines, hoses, shields, guards, brackets, nut and bolts tight. Nothing hitting, rubbing or otherwise making contact.

Checked rear end, found sagging rear springs, blown out rear shocks, crusty diff mount and bad rear sway bar links, doubt any related to noise but on the to do list

Flex discs are good, center bearing rubber worn and on my list to do next

Removed engine fan and clutch, removed hood padding that was falling off anyway. removed fan shroud as well. Checked turbo for shaft play, air cleaner mounted tight

My right side fender is totally rotten behind the plastic body trim panel and vibrates at an idle. I have two new ones to install this spring. Again, doubt related

Can not think of anything else to check. I can no longer take this car any distance from home and avoid high speeds.