I ordered an all aluminum 3 core radiator for the TJ. one issue with running aluminum radiators is galvanic corrosion which is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte. A common example of galvanic corrosion occurs in galvanized iron, a sheet of iron or steel covered with a zinc coating. Even when the protective zinc coating is broken, the underlying steel is not attacked. Instead, the zinc is corroded because it is less "noble".
which brings me to the sacrificial zinc rod drain plug from Flex-a-lite PN 32060.
Also i will be using Fleetguard ES coolant which has aluminum and solder protection; compatible with gaskets, elastomers, and other non metallic components in the engine; scale inhibitors; and its compatible with all other antifreeze/coolants.
I also ordered a vented hood louver panel.