Does the rear suspension member give any physical support to the strength of the car when on car jacks with the rear raised. Reason being I am wanting to remove it to change the rear differential mounts, as mine have cracks in them, and want to ensure that removing it will cause no damage. I have car jacks located under the pinch welds along the side of the car.
Its not cheap though.... SPF3269K Rear Sub Frame Rear Bushing $226
We have a "pineapple kit" which does the same end result but with less cash outlay. Technically its not as good as your only supplementing the factory bush, but pineapples have proved themselves time after time.
Pineapples SPF2553K Rear Cross-member Supplement Washers $26 (these complement the 52271D part, making them stiffer) SPF2520K Rear Cross-member Supplement Washers $71 (these complement the 552205A part, making them stiffer)
Once again let me know if you need any help with these parts,I may be able to do a better deal on the SPF3269K part though.