1968 383 stock cam specs

No but I would wonder what made the lifters concave, if your springs are single with no damper then go with the very small stock 2 bbl cam, if it has the damper then maybe go with the stock RR cam. I would do the valve seals at least if it's an old motor and check the springs for excessive weakness, best bet and bang for the buck is go with a kit, cam lifters springs.