390 vs 408

HI,
My '70 Duster needs one of these engines. I have a 1981 360 and a 1972 318 to choose from. The 318 is a known good running motor. The 360 hasn't run for years and is partially disassembled. Budget is a concern although if I do a build it will get aluminum heads. Ocassional strip ( 1/4 mile) outings but mainly a street car. Automatic for now but it will probably be converted to 4 or 5 speed down the road sometime. Planning sub-frame connectors and front disc brakes. Thats about as much as I have planned for the suspension/chassis. Need your take on these stroker engines for a nice full interior/resto mod Duster...Thanks