OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com
Samsung 8GB 2x 4GB RAM DDR3 1066MHz PC3-8500 SO-DIMM Memory for MacBook Pro 2009 | eBay
Samsung 8GB 2x 4GB RAM DDR3 1066MHz PC3-8500 SO-DIMM Memory for MacBook Pro 2009 | eBay