Stabilizing headers to the engine?

I'm close to installing headers on my smallblock and it just does not make sense to me that they only hang from the flange bolts with no other support for them moving around.
Thinking to stabilize them to the block by adding a strut from a belhousing bolt to one of the tubes on each side.

From the collectors back the exhaust will be supported by donut style hangers.

Thoughts?