From what I can see the Toyota Crown uses an upper A-arm and a lower single arm with a diagonal ball-joint brace arm. That brace arm can cause problems if worn.
Since the steering rack is front of the suspension, if the Brace is worn the hubs will shift aft when the brakes are applied causing Toe-in. Driving with a lot of Toe-in will cause the suspension to climb inwards and add Positive camber.
That or you already have a lot of toe-in and the climbing effect is the result.
https://www.nengun.com/oem/toyota/48660-51020
There are quite a few "IFs" in my response as I don't know your year model donor suspension info.