Inline has the whole kit
https://www.inlinetube.com/products/bsh7002They list two kits for a 70-74. On with an intermediate cable and one without. The correct one for your car is the one without. 1970 was the year of the cable system shown in the illustration Snk-eyz posted.
71 and later had equal length rear cables and an intermediate cable to connect them.
Either one will work (frame cable mounts must be correct though) but the unequal rear cables with no intermediate cable is original equipment correct for a 70.