Cam Specifications

I am going to venture that you are going to have to hope someone that used these parts in the fifties/sixties comes across this forum and has the cam card (or specs) for the cam. If not, you will have to plot it with a degree wheel and dial indicator.

If a true roller, I would investigate using FE roller tappets and don't forget the mechanical valvetrain from the FE is mostly interchangeable with the MEL. Just take the normal precautions for valve lift, etc.