I've got a brand new light racing / Rubicon express bump kit for sale. This fits inside your stock style spring on the front end of a TJ. It keeps the top of the spring retained and also adds a mount for a light racing 1.5" air bump stop. Located in SoCal, Huntington Beach / Irvine. Price is $495 Shipped to your door. Send me a PM is the best way to get in contact.
Here is a link to an article at one of the magazines. They show detailed photos of the kit and install on a JK. The kit for sale here is specifically for a TJ but they also make a JK version. The install and function is the same between the two kits.
http://4wheeldrivesportutility.automotive.com/109624/0907-4wd-2007-jeep-wrangler-jk-rubicon/index.html
Here is a link to an article at one of the magazines. They show detailed photos of the kit and install on a JK. The kit for sale here is specifically for a TJ but they also make a JK version. The install and function is the same between the two kits.
http://4wheeldrivesportutility.automotive.com/109624/0907-4wd-2007-jeep-wrangler-jk-rubicon/index.html