If you are using your orig. 46 bell housing, there isn't anything to do to the pedal assembly. Use three grade 8 bolts to bolt it to the bell housing and don't worry about the mounting bolts that originally went to the trans.
If your original trans was a three speed, you will need to cut/grind off the bosses on the side of the pedal bracket. The T5 is wider than the 3spd and these bosses get in the way. You will see what I mean if you try to bolt the pedal assembly with out cutting them off.
