seems online that 98-00, then 01-02
bags may have changed, you need larry as he can get all kinds of specs and charts

but bags are spendy this one in real good shape eh?
good luck.

1998 Mercury Grand Marquis LS, HPP package
FRPP PI Intake from ADTR, Ported Plenum from ADTR, Steeda Plenum Spacer from ADTR, MSD Coils
BBK 70MM TB from ADTR, E3 Plugs, 2004 MZT, SCT X3 Tune from BOC, MAF Jumper from BOC, Optima Yellow Top
Marauder Spoiler, Steeda Oil Separator W/custom bracket, Metco Control Arms & Watts Link
Addco Rear Sway Bar w/ES Bushings, 3:73 Rear Gears with FRPP Trac Lok, Superior Rear Axles, Spruce Green Brake Calipers
PowerSlot Slotted Discs, Hawk HPS pads, Extended Tailshaft with P71 DriveShaft, Rebuilt/Painted Rear Axle, Bilstien Shocks, Chrome FR500 18's, Nitto 555's - 255/45-18 F, 285/40-18 R

"One doesnt simply drive the speed limit when listening to Heavy Metal"