alright, 305 is a funny topic but i built the crap out of one and i know what you are looking for and will suggest parts for you. Now spending a tonne of money on the 305 is a waste as some would say.....the old saying goes bigger is better, so everyone should be running a 496" donovan block right.....no. Budget and practicallity come into play. i built a 305 stroker, the specs are in this site somewhere, im not going to post the numbers yet, till i video it......now camshaft is where you will acheive the desired sound everyone loves at idle. In keeping with this, you also dont want to have to change springs etc, but an aluminum intake and headers are going to be a must, parts are cheap, buy used if you have to, except for the camshaft and lifters always use top quality brand names, never skimp on engine internals, bad things can happen. Now for a good streetable cam that has that famous rumpity idle i would go no bigger than say a comp cams 268H.......this is a very friendly camshaft on the stock valvetrain, only other mods would be a good set of anti-pump up lifters. And because you have small cubes the cam will be a little more radical than say in a 350 or 400, this is due to a lower vacuum signal in smaller cubed engines. stay with a 600 vacuum sec. carb and a manifold of your choice, no single planes for a mild set up like yours........put this cam and lifters in and you will be happy with it and will wake it up a bit, i took mine to the extreme, and am amazed as the same with my friends on the little motor, but chassis dyno video will be linked to this site in a bit. good luck with the motor and happy hotrodding.