proform roller rockers

I've had them in the Duster for about 4 years now. No problems.
I got a purple shaft cam, 484/242. I had one loosen up about a week
after installed. But I retightened it and haven't even opened the valve
covers sense. I race it about once a year. I would say go for it.
Yes you need the ball and cup push rods. My whole set up cost me
about $300.00