So in short, I want to get rid of the rear air suspension and replace it with traditional springs and shocks.

I was extremely lucky and found a full set of H&R 29146-1 Sport Springs on Amazon for $165 when they typically go for $288. So even if this doesn't work, I'll at least be seeing a decent profit

Now my question is, would the Bilstein B8s that are for the AWD sedan (24-141819) fit the wagon, now that it will no longer have the air suspension? Hell, could I save a couple dollars and get the B4s for all four corners?

I did think about going the ISC route, but when I inquired about buying just the rear portion of their kit, the price just wasn't worth it in my eyes.

 

Update: Selling the springs and decided to order the Basic ISC coilover kit.

 

Was the ride too harsh on springs and Billy's?

 

I honestly didn't even install them.

Trying to find shocks would have been fine with the lowered springs was "hard."

Some forum posts would say that Bilstein B8s were the ones I want because lowering springs, but then other posts/vendors would say the B8s were too soft. Then I saw posts about B4s but too long, etc etc. The front springs/struts looks like they're the originals from 12 years and 155k miles ago, so the price would've gone up from there, too, and the Bilsteins weren't looking cheap.

In the end, I didn't feel like wasting my time/energy/money on R&Ding something like this after finding a Basic ISC kit for under $900. If I'm going to be doing that much work, it'll be for the 4 pot brake calipers from another brand. It just needs to warm up already.