Its possible, but would be TONS of work. The engines are very different, have different wiring, etc.
The Etec II is a Korean Daewoo engine thats very simple and very long lasting, the Ecotec Is German built Opel engine of the same displacement and relitively same horsepower with a lot more annoying electronic gadgets waiting to let you down. (Surprise a German engine that's over engineered right?)