I've had a couple of those - I think it's a factory spare.
Nick Jones Somerset UK
Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea
So mine would be a factory exchange High compression engine; ID/4?
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1968 Mk1 Vitesse 2litre Saloon - Blue (Factory, Cactus Green / Matador Red) - CURRENT PROJECT 1970 13/60 Herald Stationwagon - White - PROJECT 1965 Mk1 Morris Mini Almond Green / White Roof tuned 998cc - SOMEONE ELSES STALLED PROJECT 1989 MX5 NA Turbo track car - 177kW at the wheels and RWD 2005 Skoda Fabia VR-s. Fun car - 420Nm 6Spd, Fun? Hell yes!!! 2014 Skoda Superb V6 4x4 Wagon - Family Wagon 1974 2500RB Saloon. Tarmac rally car. Nissan RB25, 5 spd, R200 diff etc - FOR SALE 2006 VW Caddy Life 1.9TDi DSG - FOR SALE 1982 TR7 DHC - Navy Blue - SUMMER FUN - SOLD 1968 Mk1 Vitesse 2litre Saloon - BRG (Factory, White / Black) - SOLD 1969 4AGE 13/60 Herald - SOLD went to a good home