On Wednesday, November 7, 2018 at 9:13:20 AM UTC-8, wrote:
...Jack should always be placed under the axle itself...

The typical Cobra has a trailing-arm suspension that doesn't really have an "axle" to put a jack under, not like a car at least. The next best thing is the steel crossmember that contains the torsion springs. But even then, you have to raise it enough to extend the suspension.

--Bob K.