I have Stance 500 on my daily (IS300). Very happy with ride quality, they offer lots of options, and yes, they have the Air Piston Lift system as an option. You need to get it when you order - it uses different pistons than the non ALP equipped version.
It sounds like you want aggressive fitment and stance. This is good. Here's what you need.
Go here:
Performance Automotive Suspension by SPL Parts - Adjustable / Lightweight / Low Friction / Precision
Order:
- Front Upper Control Arms
- Rear Camber Arms
- Rear Traction Arm
- EITHER rear mid links (for OEM type) or rear toe arms (for true type)
- eccentric lockout kit
Optional order:
- Adjustable front tie rod ends
- Swift Thrust Washers (one pack). These are HIGHLY recommended bc they will eliminate the squeaking from coilover springs on compression
With these you will have full camber/caster/toe adjustability.
Roll your fenders.
Now your Z can essentially limitless fitment options. The Z fenders are massive, people dont take full advantage but now you can