hi Stu! i replace stock CVH head for ported with big valves and CVH33 camshaft head. block 1.6 CVH for 2.0 zetec with C20XE pistons stock Weber to 45 DCOE carbs stock exhaust to 4-1 with 2.5" free flow system No bad?
http://photo.qip.ru/photo/superflint/3851615/xlarge/92155150.jpg http://photo.qip.ru/photo/superflint/3851615/xlarge/92155075.jpg May be it help you. But its part numbers for LHD cars.