250,000 on my Z/28 auto with nary a prob. That would probably be 2 clutches
I’ve NEVER got more than 175K out of an AT. You got lucky I think. Being in a car when the Tranny blows is a real experience.
My Miata now has 277K on the odometer and is on its third clutch, which IIRC went in at around 235K. Clutch #2 lasted close to 140,000 miles.
Yes, changing a clutch is a hassle. On a Miata you have to remove a LOT of stuff to get the transmission out, including the entire exhaust system from the downpipe back, but if you don’t abuse the clutch you don’t have to change it very often.