I do like the whole smaller displacement for higher revs, but all that torque loss is bad in my opinion. To really utilize the higher rpm means you need the Avcs. You might end up damaging your head if it's anything like honda's vtec. What I mean is that vtec is controlled by oil pressure and pushes the pin to lock the cam lobes together. This build is really close to the Honda guys (me included, still rocking my b18c in a eg). I friend blew his b18c type r motor revving it to 8k without the vtec hooked up yet so watch out.