Hi guys, I'm planning to do a swap on my 97 impreza. I have an ej205 that's in good condition and an ej20k that would need a rebuild since it's been sitting outside so long. Here's my question; would I gain any significant benefit by swapping the forged internals from the ej20k into the ej205, along with the non- avcs cams? Is there any other route I should go? Just looking for suggestions. 

I’d use the EJ205 bottom end (block) with the EJ20k heads. 

Are the internals of the EJ20k aftermarket? They’d be worth holding on to if you wanted to properly build an engine. If they’re factory they’ll be no different/better than that of the Ej205 internals. 

If the internals of the EJ20k are aftermarket and quality parts that you want to build an engine with, and you don’t have a tight timeline, you could have them built into the EJ205 block, or if you’re going to the extent of splitting the block, why not just build up the EJ20k block? Is there something wrong with the 20k block? 

Cheers 

Bennie