Performed the strutmaster conversion to be One and Done with this sort of thing. Couldn't be happier. Rides like new, even after a year.

Parts:

Rear (strumaster) ($400); comes with springs and shocks:
TE1RB 2003-2009 Lexus GX 470 Rear Air Suspension Conversion Kit (TE1RB)

Front (village toyota) ($212):
2 ABSORBER ASSY, SHOCK, FRONT LH; ABSORBER ASSY, SHOCK, FRONT RH 4851069555

Labor:

Whatever you can negotiate!

 

Really happy I came across this thread as I'm having the exact issues as gxman1. Every now and then I'll come out and the rear suspension will be sitting on the bump stops, start the engine, pumps up to normal. Does not happen every time but starting to happen more often. My rear bags are definitely leaking/going bad.

I just need to determine if I want to replace the air bags or go with the coil conversion. I don't tow regularly, maybe once a year. I drive 99% on the road (like all SUV owners), which route would you guys recommend I take? I usually do my own maintenance/repairs to keep costs down, which would be the easiest replacement to do in my garage?

Thanks!