After I measured the gap, hmmm, it was just about the same as one of the selectable snap rings that goes in the groove in front of the bearing. So I picked the smallest one, 2.30mm, and fitted it as a spacer. There's no groove there, but it expanded out flat. [Linked Image]

The snap ring in the groove in front is nice and tight too.

1990 Monty LS 3.0 A/T LWB. KYB front shocks, OME rears and coils. 33x10.5 BFG Muds. 5.29, 2.85, RD110, RD46. 2 bouncys. Aisins. Monte Disco swaybar disconnects. GenII t-arms, idler arm, UCA's, V45W front brakes. 2in BL.