MR twins...the fins

What were the size and shape of the fins on the twins MR rode in the late 70s and early 80s (height, base,…)?

What were the size and shape of the fins on the twins MR rode in the late > 70s and early 80s (height, base,…)? if im not mistaken the base was 5" and height was 6". go to the link below and it has more info on the MR twin fins. hope this helps. Josh http://www.surfresearch.com.au/f.html

just had a set made to glass on my next board, first is in the archives and the original is there too. Let me know if you want an outline Big H