spring rates on GR2's

[frankiemillion]

From people with experience what sort of spring rates do the GR2's run out of dampening control? im thinking somewhere in the vicinity of 150-180lb rears... this seems out of the control range of GR2's seeing as tho they arent adjustable dampening.

Any thoughts cause i have been scouring junkyards trying to find a bolt up solution for the rears from a much heavier car... havent succeeded as yet tho which is sad...

Cheers for any information on the subject

[pumbaplus]

ford falcon ed-au, i did the same and i think they will fit,.. am buying some on the weekend