Ford Motor Co. and Sirius Satellite Radio jointly announced Aug. 1 that Ford and Lincoln Mercury will begin offering Sirius satellite radio receivers as a factory-installed option on four 2006 model year vehicle lines: the Ford F150, the Lincoln Mark LT, the Ford Explorer and the Mercury Mountaineer. The factory-installed option will carry a $195 suggested retail price and will come with a six-month subscription to Sirius’ satellite radio service.