1970 Lakewood GM coil spring traction bars?
 

Hi.
I'm looking for some information on a set of Lakewood traction bars that were made for GM coil spring cars back in 1970.
There ad featured a successful stock class racer, Ron Garey and his 70 Oldsmobile 442.
Here is a ebay link to the ad: http://www.ebay.com/itm/1970-OLDSMOB...item3f58a6e0ab

Any information on the bars would be great.

Thanks
Bernhard