A generic question, does an impreza ej20 engine ( 2003-2005) fits perfectly well in a classic impreza 1994-2000 era. Can I use the original gbox which i have already on my classic impreza 1994-2000?

I presume the loom would need to be changed as well.

Are there any kind of engine mounts that you would suggest or the original ones fit perfectly well?

Thanks