It was around mid-1967 that Holden introduced the options of a 186S engine and a 4-speed floor shift manual transmission within the HR Holden range ... I've never encountered the 4-speed fitted to a lesser-engined HR and it may be that these Opel units were of restricted supply. In March 1969, Peter Brock was invited to race a suitably modified HR Premier 186S sedan at Winton in rural Victoria ...
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