I just did mine today.
Raise the cart:
oil change1.jpg
Support the axle, remove shock nuts, ubolt nuts, and spring nuts and bolts:
IMG_6457 (Large).jpg
A picture of ECC's spring kit (Thank's Ron - they came in on Friday!), you get new u-bolts and spring bolts, but you need to re-use your existing nuts:
IMG_6458 (Large).jpg
Pop in the new springs, finger tight all the nuts till everything is back on:
IMG_6462 (Large).jpg
Once everything is on, go back and tighten all of the bolts. I had to put the weight of the cart on the ground to get the shocks back on....