not sure what your hp or ft lbs is but if u added headers u would most likely only see about 5 hp and 2-3 ft lbs extra...u would need to upgrade the carb to see more and on top of that upgrade the valvetrain to give your lifters more lift for even better breathing for a bit more...headers arent a major power adder, just going to a more freeflowing exhaust system is better than stock.
