Howard,
I'll take your question seriously, even if nobody else does
According to Mercedes Enthusiast in Oct 2002, "The 1993 face-lift was a cheap upgrade for the factory, a fact reflected in the price of the parts when they were new and the popularity of retro-fitting the parts to pre-facelift cars. The changes were obviously designed to cause no disruption to the computer welding machines at Sindelfingen and, as such, all are 'bolt-on'. Even the slam panel under the bonnet is the same and you only need change the bonnet catch bolted to its underside. The headlamp reflectors are identical and, as the glass is a separate part anyway, only this was changed to incorporate a curved chamfer to clear the new bonnet. The slim, body-coloured insert between the headlamp and front bumper was also changed to incorporate a recess to clear the new grille. This is available in two forms, plain and with a hole for the optional head-lamp washers which were standard on UK-spec six-cylinder models."
So there you have it; the headlamps are
nearly the same, but not close enough. You'll need new ones, or maybe just lenses if you can find them, and new filler panels for below the lamps. There's no mention of profile (inother words, 'will the bonnet fit against the wings without changing them?') so I would get it's not an issue.
Oh, you'll also need plenty of white paint. I'm sure you can get big 10-litre buckets from Wickes...
And now for my catchphrase:
Of course, if this all goes pear-shaped, then I was never here....
PJ