This came on an Aviator 4V Ford prototype billet lid I aquired a while back. I have no use for this thing. I don't know for sure if this fits the 3V GT intake but I don't see why it wouldnt. It may be larger for the 4V I'm not sure. If anyone has measurements of the bolt pattern and blade size I would be happy to check. Take a look and tell me, or buy it for $100 shipped and try it for yourself!