Whoever owned my truck before me swapped a 350 for the 6 cylinder and didn't change to a bigger radiator

, so my engine's getting pretty warm pretty quick. I've got a camping trip in 2 weeks and really need to get a new radiator in before then. Anyone got one they need to sell???
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Ah yes, the college life. School all morning, work all night, study when ya can. Uh...