I bought a long tube for the same price as a couple of those dumb manifold gaskets that almost always leak.
I assume you mean gain hp which is not really the end goal, cause ya know, datsun...
Also the wide body thing with street cars needs to stop. Liberty walk, RWB all the trash. Lots of nice cars getting cut up to suite the persons desire for Instagram likes.
They'll all be sold for cheap and be trashed in a few years.
This.
Ditch those ugly lumps of cast iron and header all the L series. I swear all I see on this site is people ranting about how the stock manifolds are the best thing since sliced bread.