Hey guys, just wanted to update with the resolution. So I pulled the radiator And I was able to remove the plug which had burst from the threaded hole. Apparently these plugs are for AT sensors and such, which I obviously don't have. So there are a bunch of extra plug holes on the radiator that are probably more prone to bursting. So I brought another plug from my radiator to the shop and was able to find a threaded plug with the same dimension. Just plugged up the hole with a new plug and voila, good as new. Didn't have to drop the dough on a new radiator. Thanks for your help