I have a old mini-mania exhaust manifold and I then added flanges so that I can replace the cat without taking off the entire manifold.

Here is a shot of it:

 

Here are some pics of the collector thats getting used on the header my tuner is making me. The headers primary length, tube size, and collector were all engineered around the flow numbers of his new head thats here and ready to go on my car.

The collector is a work of art. And yes, unfortunately, expensive.

Longboard

 

Can't see the pics.

 

You should now

 

Thanks
Thhat's some very nice work.