Hi Guys,
I need to rebuild my diff as it's really noisy.
My cousin gave me a heap of spares including 2 sets of crown wheels & pinions.

My questiosn is how do you kno wif they are rooted and if so can you get them resurfaced or something? Can post better pics if that's easier.
Also I found these on UK eBay
http://cgi.ebay.co.uk/LOTUS-CORTINA-7-FORD-ESCORT-ENGLISH-DIFF-REBUILD-KIT-/310297832700?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item483f312cfc
Has anyone had any success with them and would you recommend I have a go to rebuild the diff as I have built engines but have no ideas on diffs?