hey guys i want to redo my head on the calais and have a scrap one to play around with at the moment, at trade school we touched on the subject very briefly but i would like to go more indepth on the topic at hand. iv'e watched a few videos on youtube just to get a better understanding of tips and techniques but could anyone refer me to some documents and videos or from any personal experience for that matter. kind regards Sle3per

www.enginevideos.com (http://www.enginevideos.com) - I got the "power building videos" which has 2 dvds on heads/porting etc.