Something else to note is that Hellwig makes 2 different front sway bars for the 67-72 cars, the #5906 and the #55917. The 5906 can use the factory 67-72 mounting location on the LCA's or be bolted to the shock mounts (with a less than ideal end link angle, as shown above), but it limits front tire clearance to less than 245. Which really isn't an issue if you're sticking with 15" front wheels because of other limitations that will keep you from running 245's on those anyway. But if you're planning for 17" or larger wheels and wider front tires, you will need the #55917, which uses a similar end link tab location as the 73+ cars (further inboard).
The Hotchkis front sway bar also uses the further inboard mounting location and comes with tabs to weld on, and doesn't/can't use the factory mounting tab location for 67-72.