I got a reply back from JL audio and they said my 250/1 amp will work great on it, so I'm all set.
Be real careful on your settings. It is real easy to burn up a sub with too little available power.
These are the amplifier recommendations directly from the installation instructions for the JL Stealthbox.
JL Audio recommends high quality amplifiers such as the JL Audio HD900/5, 500/1v2 or J2 500.1.
The RMS rating on the sub is 600 watts continuous.