Look at this beautiful classic Datsun 260z. We got the job of manufacturing a custom 304 grade stainless steel exhaust manifold for our customer. The original exhaust manifold was leaking fumes into the cabin and annoying the customer. We got a 12mm head flange cut in 304 grade stainless steel and started from there. We used mandrel bends with 3 into 1 merge collectors and finally made a 2 into 1 merge towards the bottom of the manifold. If your wondering why the manifold is heatwrapped it is because the carbs on this model car are prone to leaking at the seals so this is to offer some protection against a fire if they do leak. If anybody is making a custom exhaust manifold for the 260z square port model head we can now supply the flange at the head in mild or stainless steel.