my rb20 knockin wtf????

[91drftr]

alright so my motor just started knocking about an hour ago i came out of the freeway and started to hear a wierd noise the noise became louder

im thinking i might of spun a bearing or something but then again something else even more weird was happenning, ide press the clutch and it made a loud winding noise like if the throwout bearing wants to get stuck once i take my foot off the clutch the winding noise goes way

i got home and checked it out and i still hear the knocking noise with the motor idling

can the knocking noise be my throwout bearing i searched around but all i found was one person on nico who said it was their throwout bearing i know most likely its going to be my motor

if this is my motor is it worth fixing or should i get another motor
and if i can fix it whats a good place to get parts from my motor is the silvertop rb20det

thanks in advance i just got this car about 2 weeks ago and now this!!

im pretty new with rbs so any help will be appreciated