So, i have been doing some research here. I have a few extra engines laying around, one 94 zx11d engine (my spare engine), and a 1990 zx10 motor. I did a little research on this zx10 engine. It has the same exact bore spacing as my zx11 engine, but has a 76mm by 55mm bore and stroke. My zx11 has a 76mm by 58mm bore and stroke. Would there be any major power gain by making this spin up faster? Is it worth the trouble i guess? I know I will need custom rods, no big deal. I would bet 500:1 the owner of my job would love the idea and probably authorize it to happen... We make internal engine parts ;-)... What say yee?? I am looking for honest feedback on this.