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That side marker light was original on all 68 Rivieras, side markers were not a part of any GS package.  There was however the cornering light option that put the cornering light and side marker in a larger housing in the same location.  Check out the “How to I D a Gran Sport” article on the ROA’s website.  By 1968, the Gran Sport option had become mostly an appearance option, with not much performance added on. They came with the ID badges, a chrome plated air cleaner, and the 3.42 positive traction rear end.

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I don't believe ANY Rivs. came from the factory with a rear sway bar.  The pic that was posted is of the rear track bar/panhard rod.  This bar was attached to the rear end on one side & the frame of the car on the other side.

 

Tom T.

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Posted (edited)

That make sense. 

5 hours ago, RivNut said:

Any car using coil springs for rear suspension uses a track bar to center the rear end in the chassis.

I thought the traction bar was used to counter the torsional stresses transmitted to the differential by the drive shaft.  Maybe?

Edited by kblawrence67 (see edit history)
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7 hours ago, RivNut said:

Any car using coil springs for rear suspension uses a track bar to center the rear end in the chassis.

 Ed,

  Many cars utilize coil spring suspension with a pair of both upper and lower control arms, no track bar, including mid sixties full size Buicks.

 The Riv only has one centrally located upper control arm, which also serves as a pinion angle adjustment, hence the track bar.

Tom

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