March 8, 201412 yr Hey Northernwestern! My buddy give me 4.111 driveline from 91 legacy. Wonder can swap fit to 87' GL to 3.900 driveline ratio? Before rebuilding 4.111ratio.
March 9, 201412 yr Transmission ratio and rear end ratio must match.So to run 4.11 you first have to get 4.11 Ring and pinion in the transmission.
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