318 with 360 heads milling : small valves

People always told me to keep the small ports on a 318 , that smaller ports = more velocity/Torque....i understand performance and mods...but the 318s is a very différent animal :) , especialy when you always had 340s and 360s ! I just wanted à nice 318 in the big fury...if a Ford 302 could move a grand marquis police car that good.. the 318 can move a fury for sure