that sounds like a project Ive done several times in the past,
what 454 engine do you have
or do you intend to build?
posting pictures of your project would be helpfull
what heads, intake, cam, compression ratio, etc,
we can certainly help you make reasonable choices.
be aware youll need decent traction bars to get the car to launch reasonably well with the significantly enhanced torque.
if you have the available budget , use of, aluminum heads,water pump,
and intake use will reduce the weight of a bbc engine to nearly that of an all iron small block v8
if its an auto trans youll also need to match the converter stall to the intended power band.
now obviously the engine combo can be varied a great deal and the transmission used has a big effect on the rear differential gearing and best tires etc.
and yes youll need headers and a free flow low restriction dual 3" exhaust to max the power output