auto to manual conversion with big torque expectations

[kaneda3]

i have rescently purchased a used my01 2.5 rs
the only problem is that it is an automatic
but i got such a great deal on the car and the fact that i am planning on turboing the car anyway(along with upgrading to heavier gears) i couldnt pass up the deal

so hear are my questions
1: can i use my auto tranny housing for the conversion or not
2: what else is involved in the switch(dont worry about the ecu)

im also considering putting in sti version 5or6 ra gears in after reading dms-usa's posts what are all your opinions of this

thank you all very much for your time