340 Stroker Build Need LOTS of Advice

Second the use of Dwayne Porter for cams.
He has done( or recommended) every cam i have used for the last probably twenty years
He is a comp dealer. Can set you up with the correct springs and such to make fireup a breeze

Make sure you have somebody qualified to look your eddies over before running them.
They can often have assembly issues..... tight guides, etc.... out of the box.....