Factory HEMI Head!

theres definatley no different in our aussie heads for the slantys as they were all us sourced, no casting of any slants was done downunder, they were all assembled in Australia though,
interestly the hemi 6 was a us designed engine to replace the rg series( slant six) the us made them and mucked around with them and gave up , the Australians fixed a lot of the harmonics and valve train problems with the
d series engine ( hemi 6) and we used them from 1970 until 1981
interstingly again there is a aftermarket aluminium cyl head available for the hemi 6 , made in Australia called the chi head ( cyl head improvements ) which I believe is a raised port/raised height version,
so if the aussies can cast and build a full aluminum head for the hemi 6 and we are sending all the aussie speed slant 6 intakes etc to you guys , I'm sure really that a aftermarket aluminum cyl head would not be that hard,
on another note a guy in oz is selling a us 61 Plymouth valiant with the aluminum block and is sprouting it also has a very rare prototype aluminum head...one of 2 or something like that....