Most of the time it even more economical to fix the active suspension, unless its completely trashed-- than it is to buy the conversion kit...
Plus you can know that you would have one of the best riding and handling cars of the decade!!
Basically, the first thing you wanna replace is the accumulators.... Total of 5, you can just replace 4 and still have good results..... Then if the shocks are leaking or worn then you can replace those....
What year is your A.... if its a 93/94, chances are its still salvageable and could be brought up to as new not too expensive!