Consulted some photos I have of demobbed Scimitars I know to be ex-British Army 235 hulls, and where the LEP inlet was still present they have this enlarged duct mod made to the top of the inlet.
I guess that shows what a Scimitar 235 with no Plasan armour or bar armour looks like
Ed:- Found one clear image of a Latvian Spartan that also has a similar enlarged duct modification. It’s consistent with the Odin-turreted Spartan 235s, and the Spartan Mk.2s that were on Herrick. This style of duct is likewise featured on Scimitar Mk.2 that is based on Spartan 235. So it’s very likely an indicator of a vehicle with the up-rated EM235 drivetrain.
The Plasan kit was on LEPs from 2003 and carried over to 235s
On Scimitar it was mainly perforated steel screens on the hull. Plus a couple of non-perforated panels covering the frontal arc - behind the headlamps, that panel that has the registration painted on it, and in front of the driver’s hatch down to the transmission cover.
Turret also had extra armour panels. You can usually see when a vehicle has them on the turret because some of the panels have a little extra overhang by the fire extinguishers.
IIRC the non-perforated stuff on the turret and frontal hull was a layer of composite though.