Free cam build...

After you’ve spent the thousands building the stroker to go along with that cam....... there aren’t many things you can buy for $200(the price of a cam) that would pick up the power 10-20hp, with no other changes.
An intake manifold could do it if the first one just isn’t cutting it.

My suggestion:
SM heads, single plane intake, cast 4” crank, flat tops, etc..... and then iiwii.

Here’s a good illustration of how the cam can make a pretty noticeable difference:

Mopar Performance Purple Shaft Camshaft - Mopar Muscle Magazine - Hot Rod

There’s a pretty noticeable spread from the best to worst, even if you don’t count the two “smaller” cams at the beginning.