These are so close I think they might be compatable
http://www.stewmac.com/shop/Bridges,_tailpieces/Electric_guitar,_non-trem_bridges/1/Gotoh_Hardtail_Bridge/Specs.html#details
http://www.warmoth.com/hardware/bridges/bridges.cfm?fuseaction=bridges_gotoh_12string
if you look at the specs they are either exact or within a mm.
http://www.stewmac.com/shop/Bridges,_tailpieces/Electric_guitar,_non-trem_bridges/1/Gotoh_Hardtail_Bridge/Specs.html#details
http://www.warmoth.com/hardware/bridges/bridges.cfm?fuseaction=bridges_gotoh_12string
if you look at the specs they are either exact or within a mm.