And does anyone have the wheel track measurements for a Sierra XR4x4 and Escort RS Cosworth WRC (tarmac spec)?

I believe the XR4x4 is as follows though I'm not sure how it's been measured, hub face to hub face or to the centreline of the wheels:
Front - 1480mm
Rear - 1485mm

Any help would be appreciated as I'm looking at machining up some spacers that will allow me to mount Escort WRC tarmac wheels to the Sierra XR4x4 chassis at the correct width so I can widen the forest arches enough to allow for a future conversion to a WRC spec chassis.


Miltz