If you have the standard Radio Cassette fitted to your 200 ELX Punto, then
that will work a CD changer. My 2000 ELX with radio cassette came with the
10 disc changer and Subwoofer as standard.  As for ABS i dont think the
upgrade is possible. Just get some decent brake pads, like Green Stuff and a
set of replacement discs. The Punto is so light that it doesn't really need
much stopping and i would imagine a full upgrade to ABS would be very
expensive.
Do what i do and "drive it like you are lost"...... you dont need brakes
people just avoid you like you got sars!!!

If it's a 2000 ELX model it should have ABS as standard  ????? - ours did !
Does it have a blaupunkt cd/radio - if it was originally sold on the Irish
market it should have
If your upgrading the radio consider an MP3/WMA compatible unit - more
expensive than a cd/radio but so more convenient than a head unit/cd
changer - if you take into account the road noise in an average punto you
can fit 30+ cd's at "radio" quality on a single disk

1. Too expensive!
2. Get a multichanger unit from your Fiat dealer (Blaupunkt), it links to
your cars' r/cass.
Iain.