Not sure what I would do, but a 3.5 twin turbo swap sounds like a hoot. Turned up to about 600 hp, of course. It works for IMSA. If they can get 24 hours out of a 3.5 race engine in the ford gt, then it should be able to handle the street pretty well. I understand these are built to race standards, but if I remember correctly I think they only use about 8 pounds of boost per turbo in race trim.