Yeah, the whole point in going rotated is so you can use a turbo that is not designed for stock location (and shorten pipes, better angle for flow, etc.). That turbo will not work with a rotated setup.
You will need an uppipe, downpipe, turbo, and intake that are all designed to work together and fit properly. Either all custom fabricated, or a complete kit. It doesn't matter if you already have an aftermarket downpipe because that downpipe was designed to mate up to a stock location turbo.