Now I'm all worried about this, my plastic tank is 18 years old and doesn't look so hot. Still not leaking that I know of, but how long can she go? Interesting thread https://forum.ih8mud.com/80-series-tech/195635-help-radiator-leak.html, maybe its possible to get the tank fixed, but you can't...
Think your up the river without a radiator. Once the plastic cracks, it only gets worse. Maybe someone else will chime in. I would stick with OEM, since yours has lasted this long(and mine as well), but I remember reading a thread where someone thought koyo(?) makes the radiator for Mr. T...