Interior updates included a revised interior with an updated dash with an analog clock in the center stack. The audio system featured a line-in jack for MP3 players integrated into the dash. Features such as satellite radio, a premium sound system by Boston Acoustics with external amplifier and subwoofer, and UConnect hands-free Bluetooth for compatible cell phones also became available in 2006. The standard audio system now included an AM/FM stereo with single-disc CD player and a 3.5-millimeter auxiliary audio input jack with six speakers, replacing a cassette player and four speakers. The turbocharged 2.4 L I4 was available in or "High-Output" versions. A "Mopar" cruise control unit became available as an aftermarket unit on 2007 models. Also in 2007, Chrysler dealers were permitted to order vehicles with separate options (unbundled options from option packages) such as anti-lock brakes and Side Impact Airbags. Sirius Satellite Radio also became an option that could be installed as a dealer option with a factory appearance (i.e. roof mount satellite antenna).