The rear control arms will be needed with a 383's power (don't forget that is the same size motor as the baby big block used in Plymouth Road Runners and Dodge Chargers). So yes an upgraded in your rear control arms is in order (especially if you are missing one from up top).
The tubular A-arms would be a good investment if you are planning to do anything more than drive to car shows and the occasional blast down the strip. The factory parts are quiet flimsy and prone to deflection under loading.
Last edited by Big Dave; 07-25-2014 at 03:27 PM.
Reason: Everybody wants to feel needed so I put that word back where it belongs