Three years http://levitra-20mg.in.net/ levitra generic  “We’re totally different types of backs,” Brown said of the Giants’ new tandem. “David’s an explosive young back and I feel we complement each other well. I’m a big back and I run downhill, Dave can scat and take it outside. I’d much rather him have him run a sweep than me, so I think that’s what’s going to make a good one-two punch with us complementing each other.”