I wouldn't grind the pin to make it fit. Grind ( or machine ) the axle ends. The pin is probably hard surfaced and any grinding would take that off.
Just my $.02
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Good luck!
Brad R.
1992 L.X. 5.0 coupe
MODS: A few little bolt ons
New Best time ...11.60 @ 128 mph @ 2000+ ft altitude.
Rice Haters Club member #39
Users rides #2542