I have an opportunity to buy a 164 S that needs a little work, but I am not real familiar with the rear suspensions on this car. The car has a bent rear axel beam that needs to be replaced and the self leveling suspension does not seem to be working when the car is running, staying very low in the rear. I am guessing I can replace the axel beam without too much problem, but the leveling suspension I am not familiar enough with to know what usually goes wrong with them and to make a guess to what it will cost to fix. Can the air shocks be replaced fairly easily with standard shocks or is it not that easy to do on these cars? What usually goes that makes them not inflate properly and what is the cost to replace it? The exhaust sounds so soulful when I rev it reminds me of all the Milanos I used to have that sounded soooo good, and I would like to get it if it is not going to cost an arm and a leg to fix. Thanks in advance.