383 stroker?

I have a 350 bored 0.60 over with a comp cam I am looking to turn it into a 383 stroker by puttin in a 400 crank I have decided not to put the shorter pistons because I dont want top end.............my question is this I know I will have to get the crank turned to fit in a 350 will i still need to know the stroke and size of connector rods or can I just buy new rods????? any information you have would be greatly appreciated