Extending SAN via Singlemode Fiber question

I have two Fabrics consisting each of an ED-64M, DS-4700M, and DS-32M2. I want to add another edge switch to both fabrics in another building about 1/4 of a fiber mile away. I have single mode fiber to that building. Does the ED-64M support a long haul gbic? Ideally, I'd like to just purchase 2 more DS-32M2 and connect them, one each, to each fabric. I'm having trouble determining whether or not the ED-64M supports a long haul gbic and also where to find them if they do.