Originally Posted by
RubberCtyRauder
Aftermarket air springs do not differentiate between LX and HPP. The limo ones are too stiff , ask member lifespeed
I'm surprised you remember that. Those ended up being some expensive experiments, I would have saved money in the long run going with OEM.
While Arnott and Suncore list replacement air springs for "town car/limo" they are definitely not the same as the Ford air springs. The installed height appears slightly shorter (Arnott) so more air is pumped in for a given ride height. And the air spring itself is constructed differently.
One of the best features of these cars is ride quality, experiment at your own risk.
Lifespeed
2004 Silver Birch Marauder 130K miles
Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires
Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter