If you use the same timing cover they will. Go to FABO and do a search for Magnum . There were a lot of members there who have done Magnum swaps and have lots of info.
If you sue the magnum timing cover etc which I would the water pump rotates the opposite direction but you have the sepentine belt system which to me is preferable .
Adam, thanks for the reply. I have been on Magnumswap, but didn't find answers on radiator questions. Pretty sure Magnum has same outlet/inlet locations as LA 360.