Drilling Intake

Is it possible to drill a la intake to fit a magnum engine? i have several intakes and was wondering if it can be done. The 340 is sick and needs attention but I want to go to cruisin the coast and don't have time for the rebuild right now.However I have access to a 318 magnum for the taking will my stuff work on this motor?
Thanks for the help,
:burnout: Jody