He mentioned early on it has 1.25” tubes. There’s no way in hell the radiator is the issue. If anyone here thinks it is, they need to explain exactly what the issues are.
We have. He has. it's sitting too far off the radiator support. The fan needs some room between it and the shroud. I'm like you though, I certainly think he can get it running very cool without a radiator purchase. He seems to have sold himself on it. He said it first. No one else.