I've only got 11K on mine... and fortunately no problems yet. I owned a '96 Crown Vic with a 4.6L engine. It had nearly 200K on it when I sold it. Like tightdogal said, "these engines last forever".

 

Gotta agree with you all. It's the additional thing's (modifications) that tend to break..

 

yes sir stock clutch on my gt its stock other than a CAI, Exhaust, and 3.55 gears so its still slow, but its higway miles so that helps in terms of a clutch.
The cobra isnt so lucky it has a few mods and takes a little more abuse.

 

just clocked over 66k miles so far so good bought with 22k. my Throw out bearing gets noisy after some abuse tranny aint as smooth as id like it to be when shes cold other than that.