I can only show what TheBigBook says : "If you install this card in an A3000 it may be necessary to perform the infamous INT-2 modification, especially in order to get the SCSI-II controller working."
EDIT : but I did find on this forum the following texts :
TjLaZer posted on: 2005/3/8 18:44 : ... to install the MKII in his A3000, and DID NOT have the CyberSCSI module on his CSMKII 060 card then NO Int2 Mod needs to be done!"
Crisisdog posted on: 2005/3/8 21:41 : "The INT2 hack is only required for accelerator boards which have SCSI or a PPC processor also installed, which the A3640 does *not* have."
As there is no scsi module on the card then this means that the INT2 fix does not need to be done, but I didn´t find any info about problems with a buster revision ...