I have a set of Firestone air springs for several years now and they perform well. Had one develop a leak due to not keeping min. air pressure in them and it bottom out on a pot hole, Replaced the single and no issues since then. The mini van type the OP is asking about has to be used inside a rear coil spring and most tow vehicles utilize a leaf spring set-up.
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rvcycleguy
TM-2002 3124KB
TV-2003 Toyota Tundra V8 4.7L. Fact. Tow Pkg, air bags
2006 Suzuki Boulevard C50c Motorcycle- crashed- parted out
1956 Royal Enfield Bullet 500 Motorcycle-sold
2006 Harley Road King
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