383 cam advice?

The cylinder heads will need machining for the correct valve springs for those. Mo money. Those are pretty fast rates of lift, which make power but they are a little hard on valve trains. It's your choice.
Yup, I will need to mill them but I have the tools to do it :)
There is always decisions to made along the way. I decide now that I can live with that, the car will not get tremendous amounts of mileage!