Ive got OBX twin manifolds, tuned length, and the OBX split front pipe 2-into-1, for R32 RB26dett.
Weld quality is excellent, they give it a lifetime warranty. The header manifold pipes, whilst small to keep to stock position, look fantastic quality.
Cant fault the front pipe either.
Just need to fit, along with twin hks split dump pumps and a decat flex pipe Ive got here. Hard @ 6'8" with no physical knees tho