A car has two roll centers, one front and one rear.
The roll center is the precise geometric point around which the chassis rolls. Roll centers may be adjusted by making suspension changes to raise or lower the roll center, or even to move it left, right, forward or rearward for specific tracks and purposes.
A NASCAR racer has the roll centers offset from the chassis centerline for the round tracks but they put it in the center for Watkins Glen (so I'm told, anyway).
Generally speaking, the rear roll center of a normal live axle car, (like your TR4 or my Spridget) is about in the center of the diff. On my car, this makes it about 9.5" off the ground (the radius of the tires). A simple way to drop the rear roll center is to use lower profile tires (or maybe smaller diameter wheels and tires).
And there's not a heck of a lot else that you can do without some major re-engineering.
The roll center of the front suspension should be about the same height as the rear. Otherwise, the car may handle in an weird fashion.
So, since the rear roll center is essentially fixed (unless you use some tricks), you'll need to get the front roll center at about the same height.....which it approximately already is from the factory. If you change camber, lower the car or do other front end mods, you should try to get the roll center back to about where it was. This is tough unless you have very adjustable suspension. I'm sure mine is off from front to rear. Many racers move the pickup point of the A-arm on the chassis to get this worked out.
There are a number of software programs that will help you get things sorted out, but you'll need to make a good number of very accurate measuments on your car first.
Here's a short article that talks about the basics of all of this:
https://circletrack.com/techarticles/4637/
And about those "tricks" for getting the rear roll center lower....
You could fit a Watts linkage or a Mumford link (as seen on Mallock race cars).
Here a link to the Mallock design:
https://not2fast.wryday.com/chassis/mumford.shtml
[edit] I just noticed that you mentioned 1 degree rear camber on your car. Not possible on a live axle car.