test the system to verify of you have an electrolysis issue going on, if not no need for a anode rod. if so, its best to verify what is causing it & correct that, make sure all ground wires are installed correctly. if there is an issue & you cant or dont want to fix it, then an anode rod is a bandaid to help slow or stop the damage to the radiator.
i have champion radiator in a 72 firebird street car and have a couple friends that use them too, excellent radiators in general but cant be beat for the price. mine is 7+ years old with no signs of damage or electrolysis, friends has been in use in a race car for 12+ years & doing fine too.
https://www.griffinrad.com/electroly...ing%20properly.