If you want to make a manifold you would probably want to use weld-els. I have a book called Maximum Boost that has information on using these to build factory style turbo manifolds.
However you could easily use tubing to create a header also. Headers can be quite durable if constructed properly as is also described in that book. If your looking for long term durability I would recommend the weld-el approach. If your looking for maximum power I would suggest the header.
However you could easily use tubing to create a header also. Headers can be quite durable if constructed properly as is also described in that book. If your looking for long term durability I would recommend the weld-el approach. If your looking for maximum power I would suggest the header.