You can put it in as one unit with some help with a few guys and a cherry picker that has an adjustable tilter on it as you need to have lots of tilt on it. I'd take the seats and tunnel out and set the engine in and then stick the trans from inside the car as much easer to hook everything up and ie cut hole for shifter, driveshaft, speedo cable etc. The other thing I'd recommend is take out the aluminum inner fender walls in the engine compartment. They come out pretty fast and then doing the headers,
oil cooler lines etc is much, much easier.