Welcome to ten tenths Noddy! Great news that it was raced in period in group A!!!
Have you looked on:
http://www.theroaringseason.com/content.php?
for pics of the race? you should be able to find it in there somewhere
edit:
http://www.theroaringseason.com/show...san+mobil+1986
has the entry list with number 51, entered by CRC chemicals NZ limited