They are obsolete from Ford but there are some for sale listed on the Mercury Marauder Swap Meet Group on Facebook . $68.00 each plus shipping. 
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				Black 2003 300A- built 9/07/02, # 4,675 of 7094. Trilogy #243, Installed and tuned by Mo's Speed Shop. K&N cold air intake, Aeromotive fuel pump, Kenne-Bell boost a pump, dual oil catch cans, cooling mod, complete Stainless Works long tube headers and exhaust system, Meg's  non-resonated 3.5" exhaust tips ,  4.10 gears. Zack & Jerry big brake conversion, TCE stainless brake lines, Ntto NT555-G2 tires;. Ridetech coilovers in front Ridetech adjustable shocks on rear air suspension.  ADTR front & rear sway bars, Metco rear control arms, watts link and driveshaft loop,  upgraded transmission , PTC 2800- 3000 stall  torque converter, transmission cooler, driveshaft balanced, window tint, trunk spoiler, trunk organizer, SS rear bumper inserts. S55 tail lights, Red Line floor mats, Ford Escape Audiophile 6 CD Stereo,  BC4E dead pedal. FBM satin aluminum pedals. Colex Supercharged Marauder emblems. Car Motorsports custom hood insulator.