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As someone mentioned earlier,add a heater core, it’s just a small radiator add on.where u decide to deflect the hot air to is up to u.either that or install the oversized radiator!supplement radiator something like this. I know its a oil cooler but probably could be use with anti freeze as well. Look under second radiator cooler. Also summit racing has a oil cooler that could possible work. Tried to post a lin k but not smart enough.