New discreet TD sounds

[Jdugg27]

I had this exact sound in my Patrol maybe five, six years ago. I can't remember what the cause was. I do remember changing out the a/c idler bearing on the pump though. Could be this.
Take the belt off the a/c pump and see if the noise is still there. Atleast you can rule out the a/c if the noise still remains.

Did that include the high pitch jingle/rattle when you let off boost/decelerate? You can hear it when slowing down in say 4th or 5th doing 100+ too