AJ's Opinion; Just for you 318 streeters
As far as this age old debate goes, in the interest of making more power; I think the number one thing to change is the PISTONS! Past that you can build it just like any HP 340/360 and have a strong motor for street use. The 318 will like alittle more converter and gear to run door to door with the bigger engines but it can be done rather easy and cheapish.