273 swap to 318/ build, cost, potential, daily driver

You'll be much better off finding a decent 5.2 or 5.9 Magnum core and building that.
Would you be able to elaborate how do you mean better off? As in readily available to find a good one worth building? Or overall period build potential for my needs? I don’t want to swap any parts off of the 273, just going to pretend it’s not here, so what’s involved in building the 5.2 or 5.9 for a basic cruiser? Trans options? Exhaust issues? Thank you for chiming in!