air ride cabs

[elm]

anyone ever convert an old R series to Air ride cab?  I've seen a kit or 2 available but would love to get some real-world info first.  I'd be installing it on a 1989 R600.  its already got hood rollers, an exhaust stack that doesn't mount to the cab, and the radiator supports go to the frame, not the cab, so I believe all that's left is to add the replace the rear cab mount with the proper bracket/air bag.  I know you guys like pics.... but for some reason I've never been able to successfully upload a pic to a forum.  I have no idea why.  (I get error code -200)

[tjc transport]

my  88 R had air ride cab from the factory. 

[JoeH]

I converted a 1988 RD690S to air cab.  Literally found a 2002ish RD at a junk yard and bought the rear mount assembly. You need the exhaust stand/crossover bar, 2 brackets inside the frame rails that the shock absorbers bolt to (one bracket on each side) air bags, a plate that bolts to the underside of the cab, and the bolts that thread in from inside the cab.  There's a leveling valve as well in that assembly, I think we tied our air supply in from the line going to the seat. Bolts right in, makes a world of difference on ride quality.  

[JoeH]

Everything bolts right in.  Steal the VIN from the donor truck so you can get new air bags and shock absorbers.  The airbags are threaded if I recall. You grab it and spin it to get the bags out.

[elm]

And the front cab mounts just stay the same?