Factory Five Racing MK4 ROADSTER Assembly Manual page 60

If not already done, fill the axle with gear oil. See Appendix for specifications and capacities.
If using a used rear axle, remove the lower shock mounts and the anti vibration weight under the pinion.
Drill the lower control arm mount holes with a ½" drill bit.
59
www.factoryfive.com 508-291-3443