DON'T DO THE SPRING ASSEMBLY YOURSELF!!
Have the shop disassemble your current springs & shocks and use the top and bottom mounts to reassemble the new components. When the shop is done with them put them back in the Jeep and be thankful you're alive.
The fingers on most manual spring compressors get stuck between the coils and you're not able to get the compressor back out again - if it hasn't flown apart and killed the user beforehand.
For a write-up on how to put it all together
take a look at this Hot-To.Bob