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

Take the path of least resistance, as in affordability and ease of assembling and installing without having to buy specialty make it fit parts. Your goal should be to get it on the road asap without frustration of a long build. A car of that age is going to have other work going forward, body work and paint, interior repair, brakes, tires and so on. It never ends. You don’t want to start a project and end up not seeing light at the end of the tunnel.
You read my mind and in so many attempts that’s EXACTLY what I have been trying to convey in my posts and transparency. Maybe I didn’t do it well enough. I am new to all of this in sharing and communicating. But thankful for the community and the folks here.

Staying on that topic of “path of least resistance” do you have any advice and or experience with the subject? 273 build vs LA 318 vs magnum? Along with trans, exhaust and read end concerns?

You said it best and that’s what I’m hopeful can be done. Thanks!