Magnum Cam recommendation

Any cam manufacturer can and will ya do what you want.

The most simple and cost effective cam is a Hyd. flat tapper cam.
A solid lifter flat tapper cam is the next cheapest followed by minor maintenance with rocker lash adjustments periodically.

If you already have a roller cam engine, then just swapping out the cam is the most cost effective. Staying with a Hyd. roller cam will keep it inexpensive.