Slide 41 Bug@5-Speed Output Flange Install
When ordering its important to know if you have the early 901 sized flanges (Large) or 914 flanges (Small) due to the different sized hole in the flange.
Bug@5-Speed Flanges are affixed to the differential with the removed washer and expansion bolt (It is recommended that you replace bolts with new ones
Tighten to recommended manufacture specification