I have almost the same problem with my 380 sec..changed the tires..rotors..center drag link..tie rods..ball joints..and still it happens

my problem is when you take the car above 45 and drop the speed it does it only on the right hand side..almost like the tire is bouncing..

now Im going to go for the entire front end replacement of upper control arms..lower control arm bushings..subframe bushings..etc..

benzat

1982 380 SEC