Has anybody tried running a Crosswind Intake manifold on a magnum engine and compared it to the standard barrel manifold? I am thinking of getting one for my 5.2 and just wondering if there are any gains to be had by the switch?

The Crosswind is a bigger performance manifold and the barrel is tuned to match the cam and give the 5.2 as much low/mid range torque as possible. If its computer controlled the Crosswind will throw off the fueling.

Unless you are changing the cam and re-programming the ECU or adding a carb and conventional ignition, I'd leave it alone.

The beer keg, barrel intake is made for maximum torque in a truck application. They were made to get heavy loads moving from a dead stop. And the Crosswind (and Eddy) intakes are made for maximum horsepower in performance applications, to get lighter loads moving as quickly as possible.

If your vehicle is mostly stock (truck?), probably best to stay with the barrel intake unless you are ready to commit to a performance vehicle instead of maximum grunt.