thanks for the information guys. Converted did say the head was a JTS item but I just thought that it was a race spec head and had no idea what was different about it so I didn't bother asking....till now cheers for the radiator info too that will be a big help in helping me sort the hoses out. If I use a twin weber manifold will the headers definateley clear the intake? and can someone tell me if the distributor used in an A12 is the same as the distributor used in an A15?