Comp G OE spring replacement

[Infinity9999]

Getting replacement OE springs for my 04 Comp G. My mechanic said that he can't find the rear Comp G-specific springs (based on my VIN) anywhere. Are the spring rates different between Comp G and non-Comp G? I know the struts are different. Could I just use regular GTP springs? Or maybe go with GXP springs in the back? I think GXP ones will raise the car up, though. He's got Comp G springs for the front, so I only need something in the rear. Any thoughts?

[Bio248]

the struts are different, not the springs.