340 4bbl intake on a 318

everybody has there opion, i've run a 69 340 intake on a 318 for years gives em good lowend power,the ports are bigger, but it still works good,the performer intake has the 318 ports, but the 340 intake works just as good if not better, if it's not a all out racecar use the 340 intake i got 20 mpg on the road with mine with hedders, crane 268 cam, and 294 gears,