It appears to be a Howard Head GMC(45 degree intake ports). The 2 piece rocker cover could be a Horning or Fisher or even a repop. My guess on the car is a 50's Chevrolet. Like to say it has a 1 piece windshiels but that would be a stretch...Good Luck

216.158 MPH 12-Port 302 GMC on 70% 171.0 MPH 302 stock head on gasoline 7 years later