I have always used new fasteners on all internal parts every time I build something.I recently got some new ring gear bolts at Summit and was thinking I just changed them 5 years ago when I put the 3.54's in.Do you guys change ring gear bolts,flywheel bolts,pressure plate bolts etc. when you have them apart? I just think it's just cheap insurance to use new top quality fasteners when you have it apart
Now I know an aircraft tech and he says sometimes it's better to know what you have instead of using new.
Do you guys use new bolts every time you change out rotating high stress parts like flywheels and ring gears?

Gus