[chopper]

I also have the AC jack and it works well. The model you are probably interested in is the DK13HLQ. It is a low profile, high lift jack which will fit under your Cobra with no problem. Its only drawback is that its rated at 2600 lb rather than 4000. However (and this is based on experience) the DK20HLQ model will not fit under the Cobra. In fact, it probably won't fit under your standard passenger car. The local rep here in Mesa told me that model is designed primarily for pickkups and SUVs. As Dexter says, it's a little pricey but is a nice jack.