B1 BS Headed 440 Header Suggestion

I am going to run B1 BS heads on my 440 in my Duster. The header flange is located .4001" taller than stock. I am wondering if anyone else is running this combo and what type of 2" primary header will work with what I got. I am using the Alterktion set-up so I have no more torsion bar and steering issues. Any help would be appreciated!
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