440 swap from small block

the hardest part of having a bbm in an abody is the exhaust. I strongly suggest go with manifolds to start you out and get you going until you save up money to go with headers. also im not sure of a 74, but i have a 70 dart and make sure you use a 187 or 699 oil pan, you get the most clearance away from the steering linkage and what not.
also chek out bigblock dart .com for more info. and make sure you do a lot of homework first.
http://www.engine-swaps.com /Pages/ProductsType/OilPanSchematics.html