There are plenty of little things to distinguish them. For starters, a 2JZ is a 3.0 (3000cc) engine whereas the 1JZ is a 2.5 (2500cc) engine. See that "2500" on the cam cover? Also, in the US, the SC300's never came turbocharged from the factory. They only came with the non-turbo variant of the 2JZ, the 2JZ-GTE.
It is clear he did the ever-popular 1JZ-GTE swap, so it's essentially the same car as the Toyota Soarer in Japan. It's a very straight-forward swap.