Classifieds Menu Place Ad Browse Ads Cross flow Derrington head Click to enlarge image. Contact Information Contact W. Kevin Fitzgerald Phone: 627-365-3477 Location: Revere, MA, USA More Information On original Derrington/HRG cross flow Head for MG engine. Includes Weber intakes and original valve cover. I do not have valves. Tweet This Flag Ad This Ad has been viewed 78 times.