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Run to Rund · 11-13-2011, 09:42 PM

The later unit is about 3/8" per side wider. Spring mounts are flat plates on the early one, using a formed steel top cup and a 7/16" bolt to hold the spring. 68-up use a small "tower" as a seat and the spring pigtail simply plugs into it.

11-13-2011, 09:42 PM	#4
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Chevelle 12 bolt?? The later unit is about 3/8" per side wider. Spring mounts are flat plates on the early one, using a formed steel top cup and a 7/16" bolt to hold the spring. 68-up use a small "tower" as a seat and the spring pigtail simply plugs into it.