These are "new" and unused. 50 x 40, port work done by competition engineering, 62cc chambers. Titanium valves, jessel rockers, modified valve covers. Extensive modifications to heads. I will dig up flow sheets. Stud pattern is for 6 x 1/2" studs, and 4 - 8mm studs.
Im looking for 3k USD plus freight for them. I am in New Zealand.