If the question is a Tri-Y vs 4 into 1 headers, I don’t know. I have only read up on a few tests where, IMO, ether header will do just fine. Both made really good power. I do not remember one crushing they other on the listed dyno graph numbers.
If it is a question on the quality of the header, the above headers are of very good quality. Those headers also package better inside the engine bay.
