I had a CA radiator at the start of my build but changed to an SR one as top hose inlet is on passenger side so gets the hose away from the intercooler piping going to the throttle body.
The mounting points are all the same as long as it's an S13 radiator as the S14 one is taller.

Your probably already aware that you then use an EXA thermostat housing which will point in the right direction for the SR top inlet.