Stroking a 318 engine

First thing have to do is decide which heads you want to run, basically open or closed chamber so you know what pistons get flat top or dish to get the right compression and port size and cfm for the HP and powerband you want. Some of the choices are open chamber LA 340-360 stock with some porting or eddy LA or closed chamber stock magnum's with some porting, EQ, RHS, Magnum Eddy's and W series heads etc...