Thanks TransSami, ktmike and Hemi.
For the sake of time I can make one up here based on your photo's Hemi, some more from Joe in Sydney.
A project for next week.
Had the original radiator out to get checked out - apparently fully bypassing internally and 60% blocked. Had a new baffle put in so its a proper 2 pass again with the tubes cleaned out... should work just a little bit better now .