Last time out at Hamptons resulted in an unrepairable crack in head (Water jacket to oil gallery behind Cylinder 4 - fark!..)
Decision time. Source another second hand head, spend $$$ on crack testing, machining for big valves, porting etc just for it to happen again being 40+ years old or bite the bullet a get one of these from Burtons
Still heaps of $$$ to spend on machining but ....
Any thoughts people?