vht

What would be a good choice on turbos for a 6.0, 317 heads? Just toying with the idea right now, but for quicker spool, and smaller 3 in down pipe out of each, it seems like it'd make more sense. I'm talking a cheaper china turbo, maybe On3's? Something that I could update to a better turbo later and not have to redo everything. Wouldn't it be better staging with twins as far as spool time? Is there a down side to twins over 1 good single?