Suspension

[holla2sym]

I have a '92 Deville and the air tubing that is used to pump up the rear suspenion has a leak. The leak in the hose is behind the dash somewhere. I felt that it would be alot of money or a lot of work to have this repaired. Can anyone give me any advice on this ?
I was also thinking of giving the caddy a higher ride, like you see with the Chevy, Caprice or Malibu. What would I have to change in order to do this, shocks, springs, etc... please help.

[bustedratchet]

I'm sure replacing the coil springs would beef up the ride height.I could be wrong, But I've never heard of air suspenstion lines going through the dasboard area.