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