I used to partner with Hooker by supplying cars to use for designing
their Headers from my Car Dealerships. Jack Davis (RIP) was head of Hooker design
department and fabricated personally the most difficult headers to design for them
Until his passing he also personally custom fabricated and design all of our Stock/SS
headers. I still copy them today for our National Competitive Mopar Racecars. He was until his
passing one of the very top Header Engineers in the World.
He told me after extensive flow testing that you could significantly dent the headers
without any flow issues whatsoever to incur.