First thing about cheap aluminum radiators is they are a epoxy core only. This is pretty weak and doesn't last long. I discovered this from using a universal jegs 2-1" core. Only lasted 2-3 years. The epoxy breaks down and small leaks start.
A good aluminum radiator is pressure braised and epoxy over top. Also, for off road you can't solid mount an aluminum radiator and you need a floating type of mounting system that allows the radiator to move. Hope this helps.
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