Clutch grinds/slips?
 

when i push the car to mid/high RPM in first and second gear the clutch grinds... does that mean i just need a new one or something else could be wrong?

or will i also need to replace pressure plate and release breings?

you mean shifting or jsut driving..? I woudl say new TOB pilot and new clutch while you have it torn down.

when ur driving in gear and u push it....

more likely bearing on main shaft etc or dif...it's your tranny not your clutch I woudl imagine

nah i know it not cause i know how a sliping shaft sounds like