engine swap for the 1996 gst

does anyone know what is a common engine swap for the 1996 eclipse gst? is there one? and is there any way to convert my eclipse to a twin turbo? heard about it but never seen it done

Just keep what ya got, man. You have the 4g63...a very potent engine. It can handle up to 450-hp on stock internals.
As far as twin-turboing, don't try it. It doesn't have any benefits. Simply because you have an inline 4...they don't respond to twins. In fact, you'd lose power.
Good luck.:)