Difference In Port And Polish...
well one is actually for beta1 MAF systems which u use regardless of swaping or not. and the second one is for a beta2 MAP IM which has athe MAP sensor bung in the manifold.
basically the BETA1 MAF manifold is what you have and will need with this engine or if you beta2 swapped in the future.
basically the BETA1 MAF manifold is what you have and will need with this engine or if you beta2 swapped in the future.



