I wouldnt say that the header looks like a top notch job.
I dont see a waste gate flange either.
321 stainless is a cheap material, and isnt realy that stainless.
Eksposse it to salt and water and it will rust.
Take a look at all the filler material in the runners around the manifold- that needs to be ground away to not upset flow.
And last, judging from the collor of the welds, i dont think that they have used shield gas inside the tubes when they welded them, but thats hard to say from a picture.
But at that price its propably a good bargin.
I dont see a waste gate flange either.
321 stainless is a cheap material, and isnt realy that stainless.
Eksposse it to salt and water and it will rust.
Take a look at all the filler material in the runners around the manifold- that needs to be ground away to not upset flow.
And last, judging from the collor of the welds, i dont think that they have used shield gas inside the tubes when they welded them, but thats hard to say from a picture.
But at that price its propably a good bargin.