360 manifolds/headers?
Ummmmmmmm, to general of a question this early morning for me. I have an idea though, click this --->
http://www.summitracing.com/
You can in put the year make and model of the car for parts your looking for.
the swap from /6 to V8 does not make any part available in cars with normaly available V8's un-useable.
In otherwords, what fit a V8 car will fit the /6 car with the V8 swaped into it.
Best headers is a topic well used around here. Best fitting would be ethier Dougs or tti's. While pricey, they do not have 3 out of 4 exhaust tubes going under the drivers front end linkages. Which result in dented/damaged exhaust tubes on the header.