The specs work for alignment. The way I like to align it is to find the centerline of the body, front to back. And line the centerline of the frame with that. To find the center line you can find 'like items' on each side of the car and frame and measure to find the center. It's good to find a few of these 'like points' on the body and frame to 'check your work' to see if you have the true center...
One caution. If you use your original '67 lower A' arms, you will have to put bump stops on them.
If I remember right, '67 subframes had the lower bump stop on the frame member and in '68 it's on the lower control arm.
I have a '68 Nova subframe under my '67
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
