Thank you! This is very useful.
When using GM parts giant I find this;
19416901
STUD KIT, Steering Knuckle Upper Control Arm, STUD KIT,FRONT UPPER CONTROL ARM BALL(INCLUDES 16,17,18)(INCLUDES BOLTS,INSTRUCTION SHEET,NUTS,PINION,STUD ASM & WASHERS)
This forum is awesome by the way. Thanks again.