05 LGT noise at 4k

05 legacy 5mt, fresh oil change and new banjo bolt with less than 1000 miles. Car is bone stock. Recently started making noise at 3800-4200 rpm, sounds like a clacking as if the turbo is about to let go or terrible knocking you can very obviously feel through the shifter. I'd think it's a throwout bearing or turbo problem but the noise goes away after 4200 rpm so my understanding was that if it was one of those things it would get worse the higher you rev not disappear. Any ideas?

Heat shield? About where my rattled.

There's no heat shield on the turbo, previous owner trashed it. seems like a bad throwout bearing/bad turbo but again the noise and extreme vibration wouldnt vanish the higher i rev.. Possible ignition problem? no CEL

Any abnormal sounds at idle? That's when my TOB squealed like a pig..

sounds completely normal everywhere except 3800-4200 rpm where it wants to shake itself apart, i can't figure it out.

There's no heat shield on the turbo, previous owner trashed it. seems like a bad throwout bearing/bad turbo but again the noise and extreme vibration wouldnt vanish the higher i rev.. Possible ignition problem? no CEL

 

Any of the heatshields. Just saying since that was precisely the frequency that my non turbo heatshields were rattling. I also lack turbo heatshield.

Thanks for the replys, turns out its the first and second gear bearings inside the trans, changing the fluid helped slightly but until i find a new 5mt just going to have to drive nicely.