G-Cat Rudder on Ebay

Can't tell if it's from 5.0 or 5.7 but I'm thinking 5.7.

http://www.ebay.com/itm/Catamaran-trimaran-rudder-assembly-/190711212250?pt=Boat_Parts_Accessories_Gear&hash=item2c674628da&vxp=mtr#ht_500wt_1414