increase HP on a 273

You are probably asking why? do a swap instead! well i would if this car wasn't so clean. i want to keep my 69 dart custom w/273 3spd auto mostly stock. just want to get a few more ponies out of it. can you reccomend a cam, intake, and carb combo that will work?
this is gonna sound STUPID but look at some chevrolet sites and see the UNBELIEVABLE horsepower there getting from
NA 283's. most of it would be applicable to the 273.