TTI small block exhaust

I spoke to TTI today. They state they do no make headers for a small block C-body. Using the search feature I couldn't find anyone on here using TTI with a small block either. Any idea why their 318 headers for the other mopars won't work on ours?

Is there anyone out there using TTI's exhaust system on a small block C-body that isn't using the factory manifolds?
Author: Furyus67