Hi Michael,
1) The camera has been replaced with a baader ACF/BCF filter.
2) Bobby McCourt did the modification. You can see his tutorial and the actual camera here:
http://strgazr27.zenfolio.com/p71444939
3) Unfortunately no warranty after modification. Any modification done to a camera voids the warranty with canon as it's been tampered with but since you are in Melb, you certainly can test all the functions before hand.
Cheers