Hi, thanks for the quick reply!
Not questioning you, but why would i need a new chassis, belts, pullies etc??
Maybe the wheelbase on the 'real' xxx-s is different, but the xxx4's is only a few mm longer than most touring cars, so a bodyshell should fit once the width is taken care of.
Understand the hubs if they're smaller than the xxx4's tho.
I did read somewhere that the xxx4 is based on the xxx-s, so i'd have thought that it couldn't be that different?
Dave