The people who really want to buy the GTR to modify it won't care about the warranty, they will modify it anyway. The few people who want to modify it and still keep the warranty will by Nismo products ($$$) which is fine. Just from what we know about the VR38s specifics it sounds like it will be a great engine to modify...so i'm not worried about that. We know it has a closed deck block, forged crank, forged rods, and strong cast pistons....it will take to boost just fine. This time around we have an extra 1.2L of displacement and MUCH better head flow over the RB26....so bigger turbos with less boost will make more power.