Hey guys....was hoping you could help me out and point me in the right direction....

I have an 01 5 speed. As of recently a grinding noise is present after hitting 70+ MPH. Once the noise starts it is there until the car cools down no matter how fast I go. If I never hit the 70+ I don't hear at all.

As a little background....I have had to fill and blead my clutch fluid twice in 2 years with no visible leaks.

I am not even sure where to start....could it be the clutch or should I be focusing on the tranny?

Thanks in advance.