if I would have to choose only with your option of the Y-Pipe I would keep the Litespeed racing y-pipe but if you need a cats (HFC) then the XYZ y-pipe would be better since its a modular setup.
I would have go with the Tanabee but its only 2.75'' exit ? which is quite below than what the VHR can flow, it needs a minimun of 3'' single!!!!
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