Just something I'm curious about. Having read the usual sources about how some later 348's had wider track width i.e. speciales (US) and spiders, but not others (GTB/GTS), I'm curious whether the width increase was limited to just the US market on the spiders? I had always thought the wider track was on all spiders, but was recently told it was only on US cars. How much rear track width was added? Was anything done to the front?