Don't even think about buying a cam until you know the exact static compression ratio of the motor, piston deck height, gasket compressed thickness, converter stall, rear gear ratio and tire size. If you need help figuring the SCR, just ask.

The lifters and cam are toast. Use the lifters for paperweights and the cam for a doorstop. If you had kept the lifters on their mated lobes and if the lifters still had some crown to them, you may have been able to re-use them in the motor. Lifters are machined on about a 50 inch radius on the bottoms. They are not flat when new. If you want to see this for yourself, drive a small nail down on the end of your work bench. Get a piece of string 50 inches long. Tie one end to the nail. Tie a ball point pen to the other end of the string. Stetch out the string and lay a piece of clean, white paper under the pen. Make a mark on the paper about 2 inches long. This is the arc you should be able to see on a lifter if you lay the lifter down on the paper and compare. No arc, junk.

Don't throw out the old valve springs. Even if you plan to use new springs, you should assemble the heads with the old springs in place to do the camshaft break-in.