Confused newbee with a 273

Welcome

The 273 can be a fun engine

Here is a nice thread about cams for that motor
http://www.forabodiesonly.com/mopar/showthread.php?t=298049

And there are a lot of parts to build it out
If you have manual steering, spitfire headers could be found somewhat cheap and should bolt up

Performer manifold would be the same for 273/318 so you could reuse that. Plus whatever carb you choose

there are a lot of built threads, have fun and make it yours