I don't know why everyone is so quick to go to coils.
'Cause these cars are old enough, that "everyone" on the board nowdays is people who paid 1k for their car. They have no money, and they never saw the car in all its glory, so they think of it as a thunderbird. You can always tell when you see a mark viii owner, and they're the kind who aren't true enthusiasts. They bought it cheap, think it kinda looks cool, don't really do much to the car, and either duck their head when they notice how nice a mark viii can really look on the road, .. or come up at the gas station telling you how nice your car is, acting like your friend, pointing out their custom painted grille, etc. And I always think, 'get lost, junk your car, and let it rest in peace you cheapass.'
most people are quick to jump to coils because even if you buy brand new bags they'll do the same thing they are now in another 5 years anyway, coils will never leak. for some people, its more practical to put coils in, there is nothing wrong with going to coils, specially if you drive the car alot and hard, the air ride just doesnt like to last.
Mine's 13 years old. I've driven between Houston and Minneapolis 14 times, been through 11 states and 147k mi with the car, and it was never more than 2" off the ground the whole time. All I've replaced is the compressor. That's not bad..
Some people think, "these cars are old, who cares" .. but really, any car, is only as old as the parts that are in it. Guys in BMW's and Corvettes tell me how nice the car is. ..You'd think they'd scour, cause it's old, right?.