I can't prove it or say why but I don't think that is a Voodoo. I don't know much about the brand but somehow I don't think they ever made lugged frames that used clamp on down tube shifters. It looks like someone brazed cantilever studs on to the fork. Unless this was done be a professional I wouldn't go near it at any price.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk