It specifically lists quicksilver or Digital Audio. I wouldn't go with it. OWC makes some upgrades that cut across those lines, but others that don't. Since this one doesn't specify, I wouldn't take the chance. I'd go with one from this link:
NO, ST use a 100mhz bus and QS/DA use 133mhz......
plus I would NEVER buy from that clown. Note that he states "overseas supplier who gets them in bulk, then overclocks them" But yet he advertises them as NEW.......plus only a 30 day warranty.......