Courtesy of Holden Partsfinder, I've manage to compile a bit of info.
VN
Calais: Audible 'Chime" from 13-10-89 Tag L380245
VN Mark II -Feb 1990 (or XX8 1-3-90 upgrade):
Windscreen wiper arms
VN Calais alloys are painted in a gloss finish
SS gets Calais style front seats
Calais badge added to lower front guards
Berlina side moulds insert went from Black with red stripe to Chrome insert
Surge overflow tank went from 18-4-90
10-25-90
-Door trim insert became part of the trim, trim also changed from Masonite to plastic
Interior colours:
31-12-89
-Palomino (66I) Dash Gone
1-1-90
-Interior colour Smoky Beige (63I) introduced
31-5-91
-Mulberry (76I)
VP
Exec 14in hubcaps change style up to 30-9-92 after L595501
A9A - 23 October 1992 -L600,000
-Lower dash a shade lighter, Instrument facia is black
-Fuel tank return line changes from the side of the tank to the sender unit (as stated above)
-Interior door lock and surrounds and interior door handles went from grey to black
-Calais used colour coded door handles
A9P -21 December 1992
-Executive side mouldings went from black to grey
8VK, 8VL -grained plastic door handles up to L640621, from L640622 they went to diecast
8VX up 18-2-93 were painted plastic, from the 19-2-93 went painted diecast (also applies to VQ).
VP V6 also had changes too:
from VH1265457: Oil dipstick moved from side of the engine to the front
From VH1275479: Lifter guides
From VH1274844: Balance shaft, Harmonic balancer, flex plate and flywheel, conrods, timing cover housing
From VH1275084: Valve rocker arms, pivots and retainer
That will do me for now
