If it is going in to S2smarts then they'll do a good job on sorting any work
that needs doing. However, 'they' do not do remaps. Those were done
by Tony of Tune4performance who had a rolling road in the old premises
that they shared back in Rickmandsworth, but when the landlords forced
them to move Tony retired and sold off the rolling road.
There are other companies who can offer remaps, but most will just 'flash'
the ECU with a generic map which has often been proved not to be that
much of any improvement over the original ! HOWEVER.....
As yours appears to have the silver 'i' on the CDi badge on the tailgate
then yours is a 68hp. The 95hp CDi is exactly the same in every respect
bar the map....so anyone who offers a remap for a 95 can map your ECU
to the same level (no matter what they might tell you). I know this as
my first CDi was a 68 and it eventually (after a fair few other mods) ran
at over 120hp....but my recommendation would be 115hp max, or you
might end up needing a new clutch sooner than expected.
As for the rear door quarter light windows...they are acrylic, and they all
go like that. No simple cure, even polishing them doesn't make them clear.
A bit clearer, but not that much. A hell of a job to replace them, and I'm
not even sure MB have any spares anywhere globally.
As for the radio, looks like the film over the LCD screen is lifting due to age
and the dreaded sunlight UV rays. I think I might have a spare head unit
somewhere, if not then consider upgrading to a a modern unit (it is a double
DIN), and you'll gain Bluetooth and possibly even USB. I would checkout the
ICE section of the Forum...in the 'child board' sub section (the Technical Guides)
Re your query reference ISOfix in the back seat...
If yours has that, then see/read this :-https://www.forfour.co.uk/forum/index.php?topic=36.0
And finally....roof bars/rails create drag (a lot more than you think) so only put them on as
and when needed.