Re: Exhaust manifold choices
I honestly dont know what the difference would be. I understand that the center dump ram horn is a good equalizer for exhaust pressure on each bank. Combine that with an equalizer header just before the mufflers & your engine will "purrrrr" as my beautiful wife says!
Frank
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1970 K-5 4X4 Blazer 
1970 K-20 4X4 Long Bed
"Liberty Means Responsibility, that is why most men dread it"
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