Air ride. HELP

[03v8runner]

My air ride is leaking down pretty bad everything I park my runner. Has anyone replaced air bags with Springs. Here is what I'm looking at. 2003-2011 Toyota 4Runner X Reas Rear Air Suspension Conversion Kit TR1R0 - Strutmasters

Any help would be greatly appreciated

Thanks

 

[Morphyne]

Go here. These guys don't all the time.
GX - 1st Gen (2004-2009) - Club Lexus Forums

Also metaltech4x4.com also sells conversion kits. However, there are non-oem bags out there that are resonably priced.