Most hot rods don't have enough suspension travel for a Panhard bar to cause a problem, provided the bar is close to level.

Here's the math. . . . With a 20" Panhard bar, and 6" of total suspension travel (3" up, 3" down), the axle will shift .225" towards the side of the frame where the bar is attached. That's probably maximum travel we're going to see in a street driven hot rod. When the Panhard bar is level, the axle shift will always be towards the anchor point.

If your Panhard bar is at a 15* down angle, the same 6" of travel will move the axle .563" away from the anchor point when the suspension compresses and 1.07" towards the anchor point when it extends.

If the Panhard bar is at 30* down, those shifts become 1.41" and 2.12", respectively. Pretty nasty axle shift.

Bear in mind that the shape of the Panhard bar has nothing to do with the movement. The critical measurement is the angle downwards from the frame attachment point to the axle attachment point.

No argument that Panhard bars work well when properly fabricated. They can turn into horror stories, though.

For an Anglia that isn't likely to run a slalom course, has a very narrow frame, and already has a track bar, I don't see the need for a change. Circle track cars are a different story IMNSHO.