I think Patrick's sold some of the GMC Nicson cast iron units. Ken, I would definately be interested in a Nicson GMC valve cover and side plate. I hope they will both become avalable again I have a set of the original cast headers and actually used them once at El Mirage...Flow is terrible.

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