yeah there is an internal divide between the two entry/exit points so it uses the furthest/most efficient route to cool ze air.
got it from just jap believe it or not. works well, never had a problem with it.
280x300x90 or something from memory. trying to keep the core size/pipework and small as really necessary to maintain response from the SC and keep a steady idle.
on a good night im getting 12psi through the cooler.