[Faster]

In addition to the excellent advice above, keep in mind (aside from the aesthetics of the outboard hanging off the back) that you need to consider reinforcing the transom area for the new bracket - if the boat was designed for an inboard the transom is likely not meant to take the stresses and loads as is.

Unless we're talking about a 25-27 foot boat, I'd stick with an inboard for a host of reasons.