As title suggests, for my rally car.

 

Christ 5.1 don't you want to go faster than 100mph?
I think 4.1 is the largest made but they may have made some special ones.
Rich

 

For rallying purposes, a 5.1 diff, c/r box and 18" wheels will give me a 110mph top speed so just right!! There are lots of posts with people having 5.1's on here so just wondering where i can get my hands on one.

Richard

 

I've just had a good look can't find anyone making anything higher than a 4.27.
Pm the people who have 5.1's and see where they got theirs from.
Rich

 

If you're still after a 5.1 CWP i've found one on eBay:
http://www.ebay.co.uk/itm/sierra-5-1-cosworth-lsd-7-5-diff-rally-road-autograss-/190584482838?pt=UK_CarsParts_Vehicles_CarParts_SM& hash=item2c5fb86c16
Rich