2 Part Shock Question

[08H3]

I'm ordering new rear shocks and have two questions. 1.) Will the Rancho RS999308 fit a stock H3? It says on their site it's for a 1"-2.5" lift. I do tow, so the adjustability would be nice, more than a novelty. 2.) If I go with GM, RockAuto shows two shocks The first is:
{#24300081} GM Original Equipment
Rear; FIRM RIDE Shock Absorber (FG2), OFF ROAD SUSP package(ZM6)

The second is:
{#20864725} GM Original Equipment
Rear; OFF ROAD SUSP package(ZM6); EXCEPT FIRM RIDE Shock Absorber (FG2)

What's the difference? I had no idea there was ever two shock options. Which also brings me to a third question: Where is the RPO sticker on H3s? I guess I've never had a need to look at it but I wanted to see if FG2 was listed. The sticker was not in the glove box

Thanks in advance.

 

[4speedfunk]

Rancho shocks totally blow....and the adjustment knob does nothing except trick your mind into thinking it does something. I call them "placebo" knobs! I would never run Rancho's except maybe if I was going to sell the truck and wanted the cheapest possible fix. Same is true for any of the "offroady" brands....ProComp, Rough Country, Zone, etc. It's all garbage....good for 5k miles. If you really want great shocks....go with a high end customizable brand (Fox, King, etc.). They are not cheap.

I know the AdvPak was touted as having specially valved shocks. I prefer to leave shock selection to the pros. I just measure the attachment points, determine the length of stroke, and make a few phone calls.

 

[GoBlueHummer]

If you don't have a lift the shock you listed isn't the one you want. They do have a rancho like the one you posted for 3's w/o a lift.

 

[08H3]

If you don't have a lift the shock you listed isn't the one you want. They do have a rancho like the one you posted for 3's w/o a lift.

Thanks. Couldn't find a P/N for a non-lifted Rancho, but 4Speed has swayed me away from them anyway. If you do have a Rancho P/N, you might post it for other people's reference.

 

[RamRod]

I second that the Rancho Shocks suck, but for what its worth the difference between setting 1 & 9 (of 9) on the adjustible Rancho's is night and day! They do work as advertised!

I can tell the difference between two clicks (ie. moving from setting 1 to 3), but not the difference between 1 click (3 to 4).... even so I wouldn't suggest going and buying them

 

[Hunner]

Shocks don't have anything to do with ride height so thinking the so called adjustable will help with towing height with tongue weight is not a factor in that respect but a stiffer shock might be better for control.

Get some air bags if you tow and have lots of miles on stock or Rancho mush springs.
That way you still have a better ride when not loaded and can adjust back to normal ride height rather than using stiffer springs or helpers.

 

[08H3]

Shocks don't have anything to do with ride height so thinking the so called adjustable will help with towing height with tongue weight is not a factor in that respect but a stiffer shock might be better for control.

You are exactly right, Hunner. It will have no impact on ride height, but a firmer shock can better control rebound with a heavier load on the axle.