Third members?

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Dec 16, 2002
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I have a 12/79 fj40 with 3.73 third members. I am wanting to go to 4.11. What years (of third members) will swap out? Thanks, Mark
 

Gus

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Apr 13, 2003
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A 4:11 third member from a late 60's to 78 FJ40/55/45 should be interchangable with your diffs. I have the same year cruiser and am planning on installing third members from a 77 FJ40 in mine, let me know how it goes. :G
 

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