I sold my E92 M3, looking hard for a low mileage M5. Typically how long do these clutches last with average spirited driving? Found one with 66K miles for $19,500 trying to quiz the guy if he is the original owner. Any tips for what I should look for would be helpful..thanks guys

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08 M3
TMS pulley
RPi scoops and drop in filter
DRB Motorsports axle back exhaust