I have a set of OEM Ford plates that I use along with case chain. Those screw links are not used - I use Gr8 bolts 3/8x 1-1/2 along with some extra header bolts:
I imagine Chevy has something similar or some can be made from some 1/4 to 3/8 stock. I also have a grunge set of valve covers so the chains wont damage my nice aluminum versions.
Dave W