ahhh, I doubt you could do the fronts very easily that way, perhaps you should take this opprtunity to buy some good jack stands (get some pads too, if you cringe when you see metal on metal on your frame). The reason I say it might be diff on ramps is that the front suspension will be compressed, and even at full travel (such as when the front wheels are off the ground) you still need to compress the shocks a bit to position the bottom end up against the area where the bolts go through, imagine pressing up hard with one hand (or the heel of your hand, actually) while fumbling with a bolt and trying to get it started in the threads - that is not too tough, but change that to having to fully compress the shock if the wheels are on ramps, well it would be far more exiciting. I am sure anything can be done, but I wanted you to know of my experience doing it (swapping shocks in the front on a C2) but perhaps my experience was due to the fact that I used gas shocks. I just changed all four corners on my 65 - Bilstein Sports. As for the rear, I never much cared for backing a car up onto ramps, although when I changed out the rears (with the car up on jack stands) there was no need to engage in the shock compression exercise a la the fronts - the bottom end can be drawn in or out as needed on those.