Well the radiator is definitely cracked. Its a small crack. But a big problem. A new radiator is $300. Shipping it to KC quickly is another $100. And I don't have time to replace a radiator before Thursday. Luckily, JB Weld is $7.
It's supposed to withstand 600 degrees (F) and 4000 psi of pressure. My step-dad, who knows of such things, said "hmmm," "it MIGHT work," and of course "be careful." I hope it holds.