Other World Computing on Tuesday announced Mercury SuperDrive kits for the pre-unibody MacBook 13-inch and MacBook Pro 15-inch notebooks. Capable of burning dual-layer 8.7GB discs, the upgraded drive also offers faster write speeds of up to 8X for DVDs and 24X for CDs. The SuperDrives are compatible with iDVD, iTunes, DiscBurn, Apple DVD Player, Roxio Toast, EMC Retrospect and CharisMac Discribe.