Jim,
The points you circled are in fact the factory lift points for the stock jack.
Pantera frames are very stiff. I currently have 2511 on four heavy-duty jackstands - equal heights front and rear.
Two are under the engine mounts as suggested by Mark, and two at the front as per your circles.
Basically, any points on the 'frame' structure will be secure lifting points. As you have found, with your lift's limits, a secondary support may be called for.
But despite the front end lightness, I doubt the car could ever actually do a rearward fall.
Larry
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