Lots of performance parts on my LA 360 - let's build my Magnum / Stroker

Get a cam specific to your heads, gearing, and larger engine size. With a 4" crank, I think I'd go with the single plane intake if using fuel injection. You are going to have a lot more low rpm torque than you currently have and the FI will compensate on the lower end better than a carb can. I doubt you'd miss it and you may get a benefit on the upper rpm side.
If the heads are stock, now is the time to get them ported and maximize flow. That 408 should be able to use all the air those EQ heads can flow, plus some. Figure all that out before you determine the cam though.