Ken H,
I am sure there is a connection - this Northern Sports Car Club and a Triumph guy 3 times with a GT6, The TR4A IRS Overdrive and a 2.5 P. I. used to go mainly to Collett and Fleming the Triumph and later BL dealers in Point Chevalier, but most of their stuff came via Northern Automobiles, so that is the connection.
" COLLETT & FLEMING LIMITED was registered as New Zealand Limited Company on 04 Nov 1948, registered at 133 Vincent Street, Auckland , New Zealand. "
Company was deregistered in 1990 but Neil Hyde took over the business [ premises and trade ] in 1984 and Hyde Automotive is now in New Lynn where I used to work late 1980's 1985 to 1992 - two stints, New Lynn has many Automotive Specialists, and my MGB used to go there for work to be done by an MG Specialist and MG Racer Garth Bagnall,
but I digress !!
Here is the Bob Tullius TR6, being unloaded from a plane - Those TR's get around.
Cheers