FC LS1 Headers vs FD ls1 headers
 

Is there any difference between the headers used for FC LS swaps vs the headers used for FD LS swaps?

Here is the ad that the guy says they fit https://minneapolis.craigslist.org/r...990684958.html

No.

They "fit" a little better on FDs. You'll have to massage the firewall a little.

Good luck sir.

Thank you. How do they compare to ls1 manifold or hookers manifold?

From a power perspective, they don't compare.