Cooling is one of our biggest concerns, as Cheaper Sleeper’s primary daily assignment will be traversing the streets and freeways of Southern Cali. Between the months of April and October, these trails are sweltering. National Parts Depot offers a seriously affordable direct-replacement, three-row, aluminum unit (PN M8005-3AL) that truly is must-have equipment for any Fox, sleeper or not, that is subjected to similar operating conditions. Aluminum rads also can be sourced through local ‘Stang scenes. However, despite their underground availability, we see parts like this as not worth taking a chance on buying used since NPD sells this new cooler for about the same price as the going rate for used ($150).