I need engine Help with the 2ZZGE Motor

I was just curious...I know these motors can be turbocharged, etc. But has anyone done any motor work to them? Such as polishing heads, higher compression pistons, changing the cam timing? I know they are saying that if you want to do any serious motor work I have to prepare the block due to the fact that it is a aluminum block and not a iron block...am I just better of getting a 3SGTE? :cwm27: