1. like what extercii and ae092 said, any rotor that shares the same dimensions as the ITR's brakes will be ok using the ITR calipers...dba rotors would probably be ur best bet, coz the biggest/easiest to find honda rotors available on 4x100 are 262mm from the ek4...
2. no - i wanted to do the same ages ago, but i was told that 'the front calipers don't mount the same as the rears...best off locating rear set up and converting it with all the supplied parts'
3. ur stock brake booster / master cylinder will be sufficient for accommodating the ITR calipers...it won't bite as hard as an ITR...but ur brakes will have a bigger heat sink...
4. if you had the wherewithal to accomplish this conversion, you already would have done it...

