I had seen this cam and also this one,
https://www.compcams.com/magnu...-351c-351m-400m.html
but I fear that the second one is a bit too "radical" for road use.
I have these springs:
https://www.manleyperformance....sional/MAN_22441-16/
which gives 146 lbs valves closed and 434 lbs at max lift for the intake and 164/461 for the exhaust.
I have cast iron cylinder heads and have no plans to change them.