I am not sure that I agree that it would be stupid.
Although swapping a Duratec into this Nissan has a certain neat factor because of utilizing this engine in a different manufacturer's car, the swap is essentially a lateral move; DOHC for DOHC, lots of aluminum, modern design, etc.
However, if Burrita is able to prove the concept, then my ambition to put the Duratec into a more popular platform, like the Mustang, may be justifiable because the Duratec has a lot to offer as a transplant motor, if it can be done.
For example, the Duratec is more compact and should weighs less than any engine ever standard in the Mustang which properly utilized can shift the COM lower and more rearward in chassis for improved weight balance. A rod and piston swap is likely to make the Duratec capable of higher HP than a factory block 5.0/5.8 for less than the cost of an after-market block. Additionally, the ease with which a Duratec can be utilized up to or beyond 7,000rpm, a properly setup turbo kit can permit the engine to have both good low rpm (<3500) cruise fuel economy and high rpm (>3500) power.