First step to restoring my 1974 Duster; Front End rebuild (coilovers needed?)

Hello everyone.

First project car here, got me a 1974 Plymouth Duster (318). I am currently stationed in Germany so before getting it shipped here I had the transmission rebuilt.

The transmission guy told me that when you give her gas at around 50 mph the front end starts to swerve.

That said, I found this article Fix Your Duster Suspension Now! Simple Pieces Make It Easy. and put all the stuff of the part list to my cart. I am posting this thread to get an insight between 1973 vs 1974 models. The one in the article is a 1973 and I am wondering if it will all fit.

Does anyone know of a rebuild kit? Not sure if I want to spend $4k for coilovers, unsure if coilovers is the move here. The disc brakes is a must, or so Im told.

Thank you all in advanced.