ionlygot6

So i have a 2000 3.8 with a stock 5 speed. when i'm at a light, i hold the clutch to the floor, put it in 1st, and it feels like im putting an auto tranny in gear. it gives that little kick back. also, sometimes it'll be hard to shift into gear, or it'll grind. and anytime im over 2500 rpms it grinds going into 5th. now are mustangs hydrolic or cable cluthes, and do you think thats the problem?