Intake, Carb, and Cam kit for a 318
Not trying to step on 273 here. He's a good guy.
With your compression, which is actully 8.0 to 1, 8.5 to 1 at best, i like this cam. Cheap and will work with fresh stock springs. The Performer and carb would be fine.
http://www.summitracing.com/parts/SUM-K6900/
Don't forget a good set of dual ext. pipes will help also.