So I have a car that needs some painting done on the roll cage. It is an older powder coat and shows some wear. instead of stripping the entire car I was told that you can scuff the powder coat down and just paint it. is there any paint that is extremely durable and will work well?

A foam roller or foam brush and some One Shot sign paint will make it look new again.

I have also use some acrylic enamel with a splash of hardener and reducer for flow.

If you don't get any direct recommendations you like, "Eastwood" will likely have a quality product right for you.

Catalyzed polyurethane like Imron or Awlgrip, with a little lacquer thinner added to make it bite the powder. Spray with a small touch up gun.
We used Imron as the touch up for powder in the powder shop years ago
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I have used Eastwood color then put Eastwood clear over that and it looks very nice. I also go to a tint place and get them to cut me some clear bra material in 2.25 inch strips and put it on the back of the cage where rocks and stuff will hit it from the burn out. It keeps it very nice for a long time and you can’t even see it is on there.

I had to do the same deal not too long ago. I used Rustoleum appliance paint in the spray cans. In the past I have used VHT epoxy paint that held up really well especially on the door bars. I also see people getting strips of 3m vinyl mostly in the fiber carbon look to cover areas that get a lot of wear.

Por15 and a foam brush....

VHT chassis epoxy paint holds up really well for a spray can paint.