[chopper]

FWIW, an alternative:

http://www.clubcobra.com/t13127.html

I like this jack because the saddle is only 3.1 inches off the floor, so it fits under both the Cobra and the wife's Miata with no problem. A little pricey (I paid $350) and rated at 2800 lb rather than 4000, but it has a 28 inch lift capacity. Not aluminum and so heavier (I think about 90 lb.) but is a pretty well-built unit. I've looked at the Harbor Freight units too, they're nice and lightweight. This is just another possibility to consider.