Re: 14 bolt dually rear
For 73-87:
1 ton spring perches are the same cab and chassis or not.
1/2 and 3/4 ton share the same perch width.
2wd and 4wd shock mounts are different.
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1985 k5 396/nv4500/203/205 d60/d70 4.56 42 sx2
1991 V3500 350/4l80/205 60/14 4.10 35 toyos.
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