Hope it works for you! An underdrive water pump pulley is an idiotic sounding idea. But then again so are all udp's.
Hah I had an SR Performance radiator, saw the same things, then jumped up to a mishimoto radiator. Fan is shrouded + mounted to radiator, but I do not have the radiator boxed in at all because my lower core support is absolutely mangled. I have no lower air dam, but I have the top and sides.I'm in for results.
I'm leaning towards faulty radiator,,