It had a wheelbase of 2,550 millimetres (100.4 in), with a front and rear axle track of 1,380 millimetres (54.3 in). (en.wikipedia.org)
This difference allows both versions to retain similar wheel tracks, despite the 100 having a relatively wider axle track to allow for the IFS system. (en.wikipedia.org)
Porsche has simply taken a regular Carrera S, thrown into the mix the wider body and axle tracks of the Carrera 4 and the engine upgrade of the optional «powerkit», and likewise included some items of drivetrain and chassis equipment as standard that you'd otherwise have to pay extra for. (autocar.co.uk)