Current options on multipurpose lifters?

Can I make a new set of hydraulic roller lifters work with my Mopar performance purple cam in the car currently? You don’t need to use hydraulic roller lifters solely with a hydraulic roller cam but can it be compatible with a traditional older cam like in my dart?

Not if it's a flat tappet, no. Flat tappet cams have an entirely different profile than a roller. They are not compatible.