That's all as I've found too Dave from looking at the both. Only subtle really. I'm going for a facelift, but have to say, I like the wheels of the pre-facelift, they 'appear' to fill the arches better, though the same size.
Here's some info I gleaned off the web:
2005 ‘Facelift’ Model Differences
The main change is to the front & rear bumpers, the front is fitted with a horizontally ribbed radiator grille inspired by that of the Quattroporte. It is one that reflects the 'family' feel of the range. The rear bumper is also new. It is sportier and features wide air intakes shielded by a black, tight mesh grille. The link with the Quattroporte is reinforced in the Coupé with the placing of the classic oval and arrow Trident badge on the rear side panels, as styled by Frua in 1963.
With the Year 2005 model, the interior can be contrasted with different coloured leathers for the central zone of the seats, dashboard and upper door panels.
The reverse gear lever now has a D (for Drive) option for selecting first gear.
The CC gearbox on the 2005 4200 facelift model has an identical software setup, called ‘sofast 1+’ to the Gransport,
The 2005 4200 facelift also has the same gear selection lever as the Gransport, allowing forward and reverse on this lever instead of paddle for forward, and incline brake assist.
The 2005 4200 facelift suspension software, setup and geometry is also identical to the Gransport
Hope all this helps John. and happy hunting
