The port spacing on the CA is almost 100% but they are slightly ovalled, if you use a 10mm flange you can match the runners to the ports to the 4a flange. turbo mounts on and clears everything. im using one on my AE71 4agte
FYI: the Honda B series manifolds are almost the same deal , but a CA stock manifold is a cheap arse way out if you can pick one up for cheaper than a stainless aftermarket mani.