Stop in for a cup of coffee

I would put 3/8 shims between the radiator support and the radiator, this will let air pass , I don't think I would do any cutting for 2"
that was my worry, theres not a lot of metal there to cut even. Radiator is rated to cool 800+ HP. I figured being roughly 55% of that in the 440, plus the high flow water pump, dual fans and I should be able to drive rush hour traffic in LA just fine on a hot day.