I have the looms now. 6 pieces. They come with instructions on where to mount.
From the picture on the sheet that was sent it looks like there is a block just under the valve cover abover the #1 and #7 exhaust manifold and the same with the other side on the #2 and #8. These blocks look to have a bolt hole for a 3/8 x 1/2 x 16 corse thread bolt.
Unfortuanately my 1971 #96 heads don't have all the block mounts shown on the sheet. They must have changed the head design after 1969.
I have two blocks on the passenger side for a AC bracket so I can use one of those. On the driver side it looks like I have one bracket above the #1 exhast but not in the back above the #7.