Reply to "polybushings for a arms"

When this chassis was designed, late '60s, the limiting factor was tires. If it was designed today the limiting factor would be tires.
The difference was that it was built around initially a Michellin radial. Nobody was too happy with it. Ford USA went to Goodyear and had them design the ultimate tire for the car, The Arriva.
That goes to show you how things have changed. A polyglass bias tire as the ultimate?
Well anyway with a tire like that, this was the best the suspension/chassis team could do.
If you do poly bushings, you need to do the whole 9 yards. Tires, wheels, shocks, and springs.
Progressive rate springs are available, double adjustable shocks are available and nice grippy soft radials are available.
The problem is that now YOU are the engineer. PI's spring/shock package is pretty nice. The billet wheels are very nice...and also if you go with wider wheels you need to rebalance the front rear anti-swaybars too. You can test your results on a g-pad. Don't forget to do before and after.
Happy re-engineering!