Hello,
the special 78 bushing needed is available from member @78stregis. The picture shows this bushing installed in my 78 NYB. No additional parts needed.
This Newport is now for sale in Germany. It has the same dent in the right quarter panel and the dealer sticker matches too. Asking price is 16K.
Chrysler Newport, orig. 56000mls
I had a brake hose fail on my New Yorker. The car pulled to the right when braking. The left brake hose was nearly completly clogged although the rubber still looked good on the outside. No brake fluid could reach the left caliper. I think a new brake hose should solve your problem.