bought mine with 131000. had a lifter ticking, pulled the heads slid in and MS4 and slung 7 grand all the time.

 

mine had 155,000 when it broke one tooth on the ring gear. tranny still gooding strong with a shift kit all last summer drag racing and i deciede to pull the motor to do a fresh up on it bc it was starting to smoke a little on start up after siting for a wk or 2 and my cyls still have the honing marks on them and the main, rods, and cams bearings look brand spanking new. i know the motor has never been cracked opened up if this info gives u an idea