clutch grinding...

ok this is on my 98 GST.. my problem is the clutch the master cylinder i believe gave out so my brother switched it but now da clutch is real weak i have to put my foot all the way down to shift... also my car grinds into 2nd gear.. it goes in it just grinds right before it goes in.. i was wondering what would be done to fix this and if possible a dollar amount..

Thanks

DAMN
You better learn to some better grammar. That shit was so hard to read and make out what you were trying to say.

Anyways, It sounds like you didn't get all the air out of the clutch lines. Thats why the pedal has to be on the floor and the gears grind. Or you could just have worn synchronizers.

Did you make sure your pedal was adjusted properly. As SilvrEclipse said, make sure you bleed BOTH the master and slave cylinder.