340 360 swap

Can Anyone Tell Me If My Intake Manifold, Oil Pan, And Pickup Tube
Of My 73 340 Out Uf A Duster Will Bolt On To My 73 360 Out Of My 73 Power Wagon. I Thought The Parts Were Interchangeable Put The Local Parts Store Has Diffrent Part Numbers For The Oil Pan
And Intake Gasket. Any One Done This Swap.