Five different coil/distributor arrangements were used during 1941, causing confusion for mechanics. Other variations were: two different positions for the generator, and three for the cooling fan — front of the crankshaft, front of the generator (rare) and on a bracket. This is thought to be the first Ford to offer a replaceable cartridge oil filter as an option. The two interior heaters were a "Southwind" gasoline burner, which had the advantage of keeping one warm in winter at drive-in movies (provided a small electric fuel pump was used), and a more ordinary hot-water type. Both had window defrosters. It had an excellent radio, which could consume the battery in about two hours. Electric windshield wipers were available in addition to the vacuum-powered wipers. Three different convertible power top mechanisms (vacuum, electric screw, and hydraulic) and two different header bar latching systems were used. Rear suspensions sometimes had a sway bar, most did not. It had excellent brakes and among the best handling of ordinary cars of the time. It served a transitional role in Ford’s lineup.