Non-Chevy Power in our 71 C10

[Pickemuptruck71]

Hey Guys/Gals: I dont want to step on anyones toes, but have any of you swapped in a non-chevy powerplant into one of these babes, my son and I have looked at the dozen or so that run around our area and they are basically the same once the hood is popped. We are keeping the 69 C20 in the chevy family, it has a 327 installed and that is staying put. But for the 71 I kinda am leaning towards a 500 Caddy motor, or even a 455 buick, any thoughts or ideas on this....... Please no curses or voodoo placed on my soul