These pics were taken at the annual Golden Trophy Race Meet held at Suzuka East Course 17th january 2010 plus a few from 2009. Apparently this event is the the first meet to be held every new year at Suzuka, and attracts a large amount of classic car racers over the various different classes.
Pics courtesy of 唸れ４K！KP快速化日記！
I found this Datsun KP510 1600SSS for sale at Flex Auto Review in Yokohama. Looks great with the Work Equip rims.