Shocks for superstock springs

When I installed ss springs on the dart,I installed kyb gas shocks.I noticed the shocks did not allow the springs to fully flex?I had to jack up the springs to get the shocks to fit. The shocks would not extend enough to fit unless I jacked up the springs.I seemed to have some wheel hop issues.My friend suggested shock extensions.what shock can i buy to remedy this?

7-12-08 nikki's dart 005.jpg