Well, the new radiator came with a new cap, so i'm good on that part. However, i found a leak coming from the bottom (i think around the hose) so i've gotta make sure the bottome hose is on tight and replace the old clamp (i think it has lost it's strength). worse comes to worse i'm gonna replace the hoses, prolly should have done that when i changed the radiator. o well, live and learn i guess.