The ST18X series is different than the ST16X series. Those guys can use the GTS radiator, us 4th gen'ers can not. Sign up at
Celica All Trac Homepage , we're in the process of having an aluminum 165 radiator made up as we speak. The cost, with shipping included to North America, will be approx US$300-325.
Link:
alltrac.net :: View topic - ASI Performance Radiators