Good lord - how did I miss this?

Mums on a 3T. Cast in rocker boxes and the dead giveaway, no oil pressure release button in the timing chest. Triumph had great hopes for the model but it never really 'made it' and an amazing number ended up in NZ.. why? Stuffed if I know, you never see one but you see lotsa bits (tells everything)

The Matchy.... Entirely period. The first models had thinner 'candlestick' shocks before AMC's own jampots and the later girlings