How far can Manny Pacquiao go?

@jerkyong (305)
Philippines
May 30, 2008 12:51am CST
Manny Pacquiao, the pride of Philippine boxing will attempt to take away David Diaz's WBC Lightweight belt this coming June. Pacquiao has been going up in weight since he started at 112lbs if I'm not mistaken. But how far do you think his weight can go that makes him still effective?
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