67 Barracuda- Brakes and suspension on a 5000 budget- advice needed

Everyone was go at least 80-85 minimum so it’s not like we were going much faster... plus on Christmas Day the traffic was next to nothing
I love that Texas allows us to drive as fast as we need to. I don’t know that I’ve ever seen anyone pulled over for speeding on 35 and it seems rare on the other big roads around here too. The toll road around here is 80mph and some of the rural highways are 85! Hard to imagine there were 55mph limits at one time..