yea that is hard these days.. one place has quoted me $3500 just to balance the engine.. im not sure if that included fitting the parts which I will be supplying, and fitting personally.
ive also heard that the stock rb25det bottom end is good for 450+ hp... not sure if im willing to take that chance, im not having any issues with det, or smoke or compresion.. not to sure if i should see how i go on a safe tune for a lil bit till i do some more research....