I blew my diff in my SVT at around 98,000 miles. When I put it all back together I replaced the clutch on principle, although it didn't need it. I drove it like I stole it since 69,000 miles too! The clutch disc probably had 50% of its life left.

'98 SVT Contour, in at least 639 pieces 4 Speed MTX...synchro and shift fork replacement in progress