You're right Pete, the track width was changed but I think it was just done by altering the offest on the wheels (that's what a friend told me of his experiences over the weekend ) and chucking a spacer in too...This improved handling along with lowering the suspension (except the bouncy castle supers) Interiors were changed too.
Rosbird..! looking at the piccy of yur car! I identified one thing that certenly makes it a skinny! it has a flush grill thay only did them on the skinnys! on another note! do u have a ski hatch?? (the hole behind the rear armrest that accessers the boot?)
That has happened before Can't remember who (ahem!) but they were driving around for years with odd wings...ok not the full wide/skinny but two different wide wings (yeas there are differences there too!!!).
If anyone is interested as a new 155 owner you might want to read the 155 Story some muppet wrote