Common things to go out on an eg33

[jakea]

Hey guys, Im doing an EG33 swap into my 00 RS coupe. Ive got two engines, 1 an obd2 engine with ecu and an obd1 parts motor(bad bearing). The obd2 will be running the car, but it has sat for a while.
what I'd like to know is the most common parts for failure besides internals. Comp is great, plugs look great, perfect oil when drained.
I'm scared that something might not fire up the first time!

I'm only 17, so be gentle

Jake