Zr big bore

I own a 97 zr 440..case reed motor...and was wondering if anyone has the lowdown on any big bore kits..d&d 640,hooper 640 or any other kits or info...love the sled , nice and light but was thinkin of bringing up to say 125-130 hp .I have the Black Magic twins and clutch kit if anyone has bolted this set up on tell me what you think..haven't put it on yet...and from the looks of it may not even get to try it this season..Also I have a set of 38mm flatsides I want to put on if anybody has done that mod...thanks
     C'mon snow hurry up...or I'm moving to the mtns of Calf....where people ride way into April!!!!!!!!!!!!!!