Either one will work. The top type will capture the coil. You'll want to use them on both the top and bottom of each coil. The bottom version will let the coil come off of the top perch but it won't let it fall out. When you come back down it will help guide the spring back onto the post.
If you have a welder or know someone who can weld, a piece of 2.5" exhaust pipe welded to the top post serves the same purpose for < $10.
I would go with a set of both. I have the 2nd of the two and I've never lost one but it will sometimes not seat right on the bottom rubber seat. I plan to fab up a set of the first to put on the bottom.
~KADE~ kool kid klub #1
08 JKU Rubicon
IRO sells both styles pictured above. the clip ones are about 20$ and the upper ones are about $50. IRO says that either one will help retain the spring but for best results use both.
I dont see the rear being a problem for most people who keep the rear sway bar connected to keep the body roll down. Even if you did disco the rear sway bar you would probably need aftermarket rear control arms to loose a rear coil.
1992 YJ 2.5 SOLD
2004 Grand Cherokee Special Edition 4.0
IRO 3",JKS BPE's,DoetschTech8000's,Tenneco SS,Cooper Discoverer STT's 245-75R16,RC wheel spacers,SSBC Slotted Rotors, IRO Prem-sliders...
A great place for outdoorsmen in the NW. www.hunting-washington.com Member Screen name- addicted