Someone more knowledgeable will have to come along and let you know the details of what else needs to be changed out to convert your SR16VE to 2.0 liters. It might also take pistons maybe? In theory you just need the crank and rods, but you might need something simple and silly that I'm missing. I'm sure that's why you created this thread.
As for Chefjrod1's reply...
Originally Posted by
Chefjrod1 Blah blah blah you can't change engine displacement by changing crankshafts blah blah blah I'm an idiot.
Just ignore him.