HI Morgan that would be great if you have plenty of ads from the era, look them up and hopefully you could shed some light on this subject, If you go back to post 232 it clearly shows an old ad about LDN 028 which states that the colour is arctic white, The problem is that the story goes that holden built 3 proto GTRs and higher people that worked at holden say that there were 6 protos
lets see where this finnishes.