Ratty valiant shell + 440 ?

I have a deal on a freshly rebuilt 360la....im a huge magnum fan , but im telling myself maybe a turbo charged la 360 in a light body could be amazing , i would love a big block but the car as already a small block k member...so i think a small block with forced induction or even a 408 rotating n/a could be the way to go for now....