I own an '04 V8. I know the air suspension can be very costly to repair if it ever goes out. I love the air suspension feature and regularly use it. My wife is disabled and needs the vehicle lowered to get in. I noticed someone parting out their 118k mile Touareg and willing to sell me the suspension for $150 each. I am thinking about buying them for spares. What are your thoughts? Good or bad idea? Is each air suspension specific to the to its location? For instance could I use the front right in the rear left of mine.