Hi,
The wheel arch follows the curve of SS1/CP11, so you can have a good idea where their front tip ends up on BR5 or BR6.
Otherwise here is a drawing of the Equinox rear arch with measurements I made. If you print it or redraw it at scale 1:1 on a cardboard and cut it, you'll have a mock up of where the wheel arch will be on your chassis. Be careful to respect front and rear side, they are not the same.
https://drive.google.com/file/d/0B-i...ew?usp=sharing
https://drive.google.com/file/d/0B-i...ew?usp=sharing
Hope this will help
