I'd like advice about purchasing an original look spare throttle cable for my '68 400 HO w/Quadrajet. I've heard of two owners who have had theirs fail so I want to have one in the trunk in case my old original breaks.
Has anyone used the Ames FN377?
https://secure.amesperf.com/qilan/Detail_Web?part_num=FN377&order_number_e=NDMyMDY2Ng%3D%3D%0A&web_access=Y
Ames advertises it as 19.75" long.

Here on the FAQs, someone's research posted the original gm part 9792224 was 18".
http://firstgenfirebird.org/f-a-q/firebird-throttle-cables-1968-1969/