I need the following

[Gseclipse02]

Return pump rated no higher than 600 gph.
over flow box for a 55 gal inc hoses

[Bigun]

You can get the pump and overflow box both here new at http://www.aquariumhardware.com/catalog/H.O.T.-SKIMMER-BOX--481.html and the prices are not bad. I have several of their pumps and 1 of the overflow boxes and have been happy with them