Modified OBX Header / Manifold From 88-92 FWD Corolla to Fit MR2 AW11 [Archive] - Toyota MR2 Message Board

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Since there is no company that currently produces an aftermarket exhaust header/manifold for the AW11 MR2 I am planning to modify an OBX 88-92 FWD Corolla manifold to fit. Has anyone done this before that can give me any advice? I have seen the 20V to 16V manifolds that SV3power sells but in my opinion they seem expensive considering the components and the tubing is smaller than the OBX manifolds. (See reevaluation below). The OBX collector and down-pipe tubing is 2