I have a early 94 945ti badged(was) as a 940. I have since debadged the car. The car came stock with Turbo, Leather heated seats, sunroof and Hydra wheels sporting 16/205/55's. So you should be able to at least get a tire that large on the car. I am sure it could handle 17's.

You really have to look under the hood. Starting in 93 or 94, the trunk lid insignia no longer differentiated between a "940" or "940Turbo", they all said "940".

Look for the presence of a turbocharger attached to the exhaust manifold on the passenger side of the engine compartment.

You can't really tell by the wheels, trim, etc., because by 94 or 95, the option and trim packages were all over the place.

My wife's 95 945T doesn't look like a turbo at all. The dealer replaced the black grille with the black/chrome grill just before we bought it, and it came with 15" steel wheels and hubcaps. Plus, it just says "940" on the tailgate, unlike my 91 944T, which had the black eggcrate grille, fogs between the grille and headlights, 16" "Hydra" alloys, and the "940Turbo" insignia on the trunk lid.

Badging's always been a bit of a mess really. My car is a polar, but still badged as a GL.

Yes, at least in the euro market, there were quite a few (in fact most) 940 that were not turbocharged. Basic parts are the same, so just make sure you get your parts for the right engine type (B230FT) and body style (sedan), and just be cautious when getting trim parts (which shouldn't be all too often really, and even then most everyting's interchangeable).

Bram

euro lights: http://www.buvic.com/car/forsale/lights/index.html
That'll get you fogs, too. I can get you the correct type of grille, too.