Got a few questions before my parts order
 

me again


1-Oil Pressure Relief Piston & Spring ??do I just change the spring?
2-Oil Line Restrictors ? what do I need to do?Just the restricors or special line
4-#8 bearing do you guys replace them usally?
thanks
BTW car is an 89 911 turbo

I just replace the springs. No need to replace the pistons unless they show signs of damage.

I plan to change just the oil line restrictors. I have new oil lines as they are cheap and apparently are prone to leaks.

Again, if the #8 bearing is not worn, scored, marked, etc, reuse it.