Shocks and double sway?
Can you fit tires on that Signet to take advantage of these upgrades? Jus asking.
my 68 Barracuda 100% Street driver, has 295/50-15 BFG T/As on the back, on 10" wheels, @24 psi. Shocks are HD Munroe 3-ways set on #2, lol, and no rear sway bar. All 4 shocks are from the 70s and are on the third car. My guess is that they have over a quarter million miles on them.
On the street, she slides flat, and I steer the back around, with the throttle. Bin like that since 1999. I quite enjoy it.
Yeah she does, have a big S-bar on the front, and 1.03 T-bars. IIRC the rear bias is ~48%, or thereabouts. I could easily make it 50% by moving 100pounds off the front to the rear. But I'm happy as it is.
As to your question,
You said
it is truly performing now lovely.
Therefore I say; leave it alone. That's my opinion.