HI their,thanx for replying,seems like this is a real good club to belong too,how about sourcing the proper large oval port GX head with the big water jackets under the ports and a good set of webber 40dcoe carbs,I run a 1647cc sub and need it to be able to breathe,we run methanol fuel with a 14-1 compression ratio,carbs are limitted to 34mm chokes 40dcoe webber,head and valve train is free as long as bolt patern is unmodified,here we only find the round port 1200 head and the round chamber A14 heads,I currently use a A15 kidney shape A15 H89 casting head,need to find extra bit of horsepower,LOL

Hi guys, I need help on locating roller rockers and lightweight pushrods asswell as proper A12GX cilinder head,then the other part rather difficult to get my hands on in South Africa is a Datsun AY12 x-flow cilinder head complete with rockershaft valve cover etc,any help?