For a 72 ? Not sure. I went to a local metal shop and our local Fastener shop, got 2 different sizes of pipe, a 6" grd 8, fully threaded bolt, and some Grd 8 washers ( to place on the pipes)
If you have a cordless impact, you can set those things in and out in a matter of seconds while they're on the car. Hardest part is taking the old cam bolts off so you can pop the thing up spinning around and work on it while it's still attached to the upper ball joint. I'd be more than willing to share exact specs on that stuff if you need I know that's not the question you asked
