340,to stroke or not to stroke

Where are the main conflict areas when putting a 4" crank in a 340? How much machine work needs to be done for the crank and rods to clear? "Bore and Stroked" What combo of parts do you buy for your stroker kit? Do you have the recepe on Hand? I really do thank everyone for your info on this. I'm not one to reinvent the wheel, if some of you here have a combo that works I will plagerize. He He