408 stroker cam recommendations
with stock heads and without proper modification you are pretty limited with valve lift - should be considered.
For a pure streeter i´d choose sth. like this: comp 20-227-4 / Lunati 10200703.
keep an eye on compression ratio, open chamber heads could give you trouble with smaller cams, i´d keep it below 10:1 for now. If you replace your heads you can adjust CR with a smaller chamber.
Michael