Is it just a matter of space and sizing.
As in the A-arms are further outboard of the eng & manifolds on a Chevelle vice Camao/Nova so the cable is comming up short when used on a Chevelle?
Notice the box on this ad (Posted for reference)
http://cgi.ebay.com/ebaymotors/Camaro-No...=item2c5a5e6e8b
jim