1 3/4" Headers Verses 1 7/8" on a Healthy 408....Is There a Big Difference??

The Headman Huslers only have tubes 7 & 8 exit through the fender. The 1 3/4 and 1 7/8 use the same patteren, just one is larger. First pic is from Summit, second is one I found on my phone of my (very dirty, apologies) car...Not a good picture, but you get the idea.

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yes ...... those headers are 67 and up abody right ? not early abody