Is this really how you convert a 7.5" diff to 7"???????
FORD SIERRA 3.36 REAR DIFF. KITCAR. V8. TRIKE.AUTOGRASS.STOCKCAR. | eBay
Read the description.

LOVL no no no
Ray

If it is a 3.36 ratio, its not a sierra diff, its more likely to be from a ford scorpio.

3.36 and 3.14 were fitted to 7.5" XR4i rwd only

looks a bit rough

personally if that was the only way i could have made it fit i would of at least machined it down rather than take a grinder to it